2021012010120 has 64 divisors (see below), whose sum is σ = 6153529129920. Its totient is φ = 530892705024.

The previous prime is 2021012010113. The next prime is 2021012010151. The reversal of 2021012010120 is 210102101202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2021012010096 and 2021012010105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125676787 + ... + 125692866.

It is an arithmetic number, because the mean of its divisors is an integer number (96148892655).

Almost surely, 2^{2021012010120} is an apocalyptic number.

2021012010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021012010120 is an abundant number, since it is smaller than the sum of its proper divisors (4132517119800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021012010120 is a wasteful number, since it uses less digits than its factorization.

2021012010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251369734 (or 251369730 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2021012010120 its reverse (210102101202), we get a palindrome (2231114111322).

The spelling of 2021012010120 in words is "two trillion, twenty-one billion, twelve million, ten thousand, one hundred twenty".