120100020111 has 32 divisors (see below), whose sum is σ = 179211648000. Its totient is φ = 79489887840.

The previous prime is 120100020067. The next prime is 120100020127. The reversal of 120100020111 is 111020001021.

It is a happy number.

It is not a de Polignac number, because 120100020111 - 2²⁶ = 120032911247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120100020093 and 120100020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100020151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2452710 + ... + 2501196.

It is an arithmetic number, because the mean of its divisors is an integer number (5600364000).

Almost surely, 2^120100020111 is an apocalyptic number.

120100020111 is a deficient number, since it is larger than the sum of its proper divisors (59111627889).

120100020111 is a wasteful number, since it uses less digits than its factorization.

120100020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49156 (or 49150 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 120100020111 its reverse (111020001021), we get a palindrome (231120021132).

The spelling of 120100020111 in words is "one hundred twenty billion, one hundred million, twenty thousand, one hundred eleven".