2221210021100 has 72 divisors (see below), whose sum is σ = 5508806268000. Its totient is φ = 761529323520.

The previous prime is 2221210021081. The next prime is 2221210021111. The reversal of 2221210021100 is 11200121222.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 28715276 + ... + 28792524.

Almost surely, 2^{2221210021100} is an apocalyptic number.

2221210021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221210021100 is an abundant number, since it is smaller than the sum of its proper divisors (3287596246900).

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

2221210021100 is a wasteful number, since it uses less digits than its factorization.

2221210021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118347 (or 118340 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2221210021100 its reverse (11200121222), we get a palindrome (2232410142322).

The spelling of 2221210021100 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, twenty-one thousand, one hundred".