2021101210120 has 32 divisors (see below), whose sum is σ = 4567510684800. Its totient is φ = 804879068608.

The previous prime is 2021101210069. The next prime is 2021101210151. The reversal of 2021101210120 is 210121011202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021101210120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111285040 + ... + 111303199.

It is an arithmetic number, because the mean of its divisors is an integer number (142734708900).

Almost surely, 2^{2021101210120} is an apocalyptic number.

2021101210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021101210120 is an abundant number, since it is smaller than the sum of its proper divisors (2546409474680).

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

2021101210120 is a wasteful number, since it uses less digits than its factorization.

2021101210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222588477 (or 222588473 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021101210120 its reverse (210121011202), we get a palindrome (2231222221322).

The spelling of 2021101210120 in words is "two trillion, twenty-one billion, one hundred one million, two hundred ten thousand, one hundred twenty".