111021120100121 has 16 divisors (see below), whose sum is σ = 138416172938880. Its totient is φ = 86509819342080.

The previous prime is 111021120099847. The next prime is 111021120100123. The reversal of 111021120100121 is 121001021120111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111021120100121 is a prime.

It is a super-2 number, since 2×111021120100121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111021120100096 and 111021120100105.

It is not an unprimeable number, because it can be changed into a prime (111021120100123) 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, 86225345 + ... + 87503441.

It is an arithmetic number, because the mean of its divisors is an integer number (8651010808680).

Almost surely, 2^{111021120100121} is an apocalyptic number.

111021120100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111021120100121 is a deficient number, since it is larger than the sum of its proper divisors (27395052838759).

111021120100121 is a wasteful number, since it uses less digits than its factorization.

111021120100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406224.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111021120100121 its reverse (121001021120111), we get a palindrome (232022141220232).

The spelling of 111021120100121 in words is "one hundred eleven trillion, twenty-one billion, one hundred twenty million, one hundred thousand, one hundred twenty-one".