2221210120020 has 24 divisors (see below), whose sum is σ = 6219388336224. Its totient is φ = 592322698656.

The previous prime is 2221210120009. The next prime is 2221210120049. The reversal of 2221210120020 is 200210121222.

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

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, 18510084274 + ... + 18510084393.

It is an arithmetic number, because the mean of its divisors is an integer number (259141180676).

Almost surely, 2^{2221210120020} is an apocalyptic number.

2221210120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221210120020 is an abundant number, since it is smaller than the sum of its proper divisors (3998178216204).

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

2221210120020 is a wasteful number, since it uses less digits than its factorization.

2221210120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37020168679 (or 37020168677 counting only the distinct ones).

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

Adding to 2221210120020 its reverse (200210121222), we get a palindrome (2421420241242).

The spelling of 2221210120020 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, twenty".