2101021112020 has 24 divisors (see below), whose sum is σ = 4477997238624. Its totient is φ = 827865034656.

The previous prime is 2101021111993. The next prime is 2101021112053. The reversal of 2101021112020 is 202111201012.

It is a congruent number.

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, 783961762 + ... + 783964441.

It is an arithmetic number, because the mean of its divisors is an integer number (186583218276).

Almost surely, 2^{2101021112020} is an apocalyptic number.

2101021112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101021112020 is an abundant number, since it is smaller than the sum of its proper divisors (2376976126604).

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

2101021112020 is a wasteful number, since it uses less digits than its factorization.

2101021112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567926279 (or 1567926277 counting only the distinct ones).

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

Adding to 2101021112020 its reverse (202111201012), we get a palindrome (2303132313032).

The spelling of 2101021112020 in words is "two trillion, one hundred one billion, twenty-one million, one hundred twelve thousand, twenty".