2100000212220 has 96 divisors (see below), whose sum is σ = 5898565512000. Its totient is φ = 558234353664.

The previous prime is 2100000212161. The next prime is 2100000212273. The reversal of 2100000212220 is 222120000012.

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 = 2100000212196 and 2100000212205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28727076 + ... + 28800084.

It is an arithmetic number, because the mean of its divisors is an integer number (61443390750).

Almost surely, 2^{2100000212220} is an apocalyptic number.

2100000212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100000212220 is an abundant number, since it is smaller than the sum of its proper divisors (3798565299780).

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

2100000212220 is a wasteful number, since it uses less digits than its factorization.

2100000212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74527 (or 74525 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2100000212220 its reverse (222120000012), we get a palindrome (2322120212232).

The spelling of 2100000212220 in words is "two trillion, one hundred billion, two hundred twelve thousand, two hundred twenty".