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112121021222121 = 3462177647104161
BaseRepresentation
bin11001011111100100110101…
…101001000100110011101001
3112200222122221202011200222010
4121133210311221010303221
5104143442322413101441
61034243404105350133
732421322266450162
oct3137446551046351
9480878852150863
10112121021222121
11327a829254441a
12106a997b198349
134a73c7547a822
141d9898760a769
15ce67d216a116
hex65f935a44ce9

112121021222121 has 16 divisors (see below), whose sum is σ = 149530407404288. Its totient is φ = 74729492006400.

The previous prime is 112121021222117. The next prime is 112121021222137. The reversal of 112121021222121 is 121222120121211.

It is not a de Polignac number, because 112121021222121 - 22 = 112121021222117 is a prime.

It is a super-2 number, since 2×1121210212221212 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112121021222921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1076368281 + ... + 1076472441.

It is an arithmetic number, because the mean of its divisors is an integer number (9345650462768).

Almost surely, 2112121021222121 is an apocalyptic number.

It is an amenable number.

112121021222121 is a deficient number, since it is larger than the sum of its proper divisors (37409386182167).

112121021222121 is a wasteful number, since it uses less digits than its factorization.

112121021222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186432.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 112121021222121 its reverse (121222120121211), we get a palindrome (233343141343332).

The spelling of 112121021222121 in words is "one hundred twelve trillion, one hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty-one".

Divisors: 1 3 4621 13863 77647 104161 232941 312483 358806787 481327981 1076420361 1443983943 8087789167 24263367501 37373673740707 112121021222121