120100111021 has 32 divisors (see below), whose sum is σ = 140129395200. Its totient is φ = 102570209280.

The previous prime is 120100111013. The next prime is 120100111067. The reversal of 120100111021 is 120111001021.

It is not a de Polignac number, because 120100111021 - 2³ = 120100111013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120100110989 and 120100111007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100111081) 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, 13051180 + ... + 13060378.

It is an arithmetic number, because the mean of its divisors is an integer number (4379043600).

Almost surely, 2^120100111021 is an apocalyptic number.

120100111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120100111021 is a deficient number, since it is larger than the sum of its proper divisors (20029284179).

120100111021 is an equidigital number, since it uses as much as digits as its factorization.

120100111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9826 (or 9804 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 120100111021 its reverse (120111001021), we get a palindrome (240211112042).

Subtracting 120100111021 from its reverse (120111001021), we obtain a square (10890000 = 3300²).

The spelling of 120100111021 in words is "one hundred twenty billion, one hundred million, one hundred eleven thousand, twenty-one".