121021101201 has 64 divisors (see below), whose sum is σ = 222508855296. Its totient is φ = 56463609600.

The previous prime is 121021101199. The next prime is 121021101211. The reversal of 121021101201 is 102101120121.

It is not a de Polignac number, because 121021101201 - 2¹ = 121021101199 is a prime.

It is a super-2 number, since 2×121021101201² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121021101211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 433485 + ... + 655706.

It is an arithmetic number, because the mean of its divisors is an integer number (3476700864).

Almost surely, 2^121021101201 is an apocalyptic number.

121021101201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121021101201 is a deficient number, since it is larger than the sum of its proper divisors (101487754095).

121021101201 is a wasteful number, since it uses less digits than its factorization.

121021101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089262.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121021101201 its reverse (102101120121), we get a palindrome (223122221322).

It can be divided in two parts, 121021 and 101201, that added together give a palindrome (222222).

The spelling of 121021101201 in words is "one hundred twenty-one billion, twenty-one million, one hundred one thousand, two hundred one".