2102212020120 has 64 divisors (see below), whose sum is σ = 6321616345440. Its totient is φ = 559258291200.

The previous prime is 2102212020107. The next prime is 2102212020121. The reversal of 2102212020120 is 210202122012.

It is a super-2 number, since 2×2102212020120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2102212020120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102212020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20755221 + ... + 20856260.

Almost surely, 2^{2102212020120} is an apocalyptic number.

2102212020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102212020120 is an abundant number, since it is smaller than the sum of its proper divisors (4219404325320).

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

2102212020120 is a wasteful number, since it uses less digits than its factorization.

2102212020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41611916 (or 41611912 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2102212020120 its reverse (210202122012), we get a palindrome (2312414142132).

The spelling of 2102212020120 in words is "two trillion, one hundred two billion, two hundred twelve million, twenty thousand, one hundred twenty".