2220100021200 has 120 divisors (see below), whose sum is σ = 7136851247008. Its totient is φ = 589934615040.

The previous prime is 2220100021199. The next prime is 2220100021211. The reversal of 2220100021200 is 21200010222.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2929099 + ... + 3608298.

Almost surely, 2^{2220100021200} is an apocalyptic number.

2220100021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220100021200 is an abundant number, since it is smaller than the sum of its proper divisors (4916751225808).

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

2220100021200 is a wasteful number, since it uses less digits than its factorization.

2220100021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6537701 (or 6537690 counting only the distinct ones).

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

Adding to 2220100021200 its reverse (21200010222), we get a palindrome (2241300031422).

The spelling of 2220100021200 in words is "two trillion, two hundred twenty billion, one hundred million, twenty-one thousand, two hundred".