120111212021 has 16 divisors (see below), whose sum is σ = 129360006720. Its totient is φ = 111121132800.

The previous prime is 120111212017. The next prime is 120111212027. The reversal of 120111212021 is 120212111021.

It is a cyclic number.

It is not a de Polignac number, because 120111212021 - 2² = 120111212017 is a prime.

It is a super-2 number, since 2×120111212021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120111211987 and 120111212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111212027) 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, 12971 + ... + 490296.

It is an arithmetic number, because the mean of its divisors is an integer number (8085000420).

Almost surely, 2^120111212021 is an apocalyptic number.

It is an amenable number.

120111212021 is a deficient number, since it is larger than the sum of its proper divisors (9248794699).

120111212021 is a wasteful number, since it uses less digits than its factorization.

120111212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503524.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120111212021 its reverse (120212111021), we get a palindrome (240323323042).

The spelling of 120111212021 in words is "one hundred twenty billion, one hundred eleven million, two hundred twelve thousand, twenty-one".