120111110021 has 8 divisors (see below), whose sum is σ = 145344536640. Its totient is φ = 96896357568.

The previous prime is 120111109999. The next prime is 120111110039. The reversal of 120111110021 is 120011111021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120111110021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120111109984 and 120111110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111110221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504668411 + ... + 504668648.

It is an arithmetic number, because the mean of its divisors is an integer number (18168067080).

Almost surely, 2^120111110021 is an apocalyptic number.

It is an amenable number.

120111110021 is a deficient number, since it is larger than the sum of its proper divisors (25233426619).

120111110021 is a wasteful number, since it uses less digits than its factorization.

120111110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009337083.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 120111110021 its reverse (120011111021), we get a palindrome (240122221042).

The spelling of 120111110021 in words is "one hundred twenty billion, one hundred eleven million, one hundred ten thousand, twenty-one".