210221000111100 has 144 divisors (see below), whose sum is σ = 678964942212480. Its totient is φ = 49777488364800.

The previous prime is 210221000111011. The next prime is 210221000111137. The reversal of 210221000111100 is 1111000122012.

It is a super-2 number, since 2×210221000111100² (a number of 29 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 740594535 + ... + 740878334.

It is an arithmetic number, because the mean of its divisors is an integer number (4715034320920).

Almost surely, 2^{210221000111100} is an apocalyptic number.

210221000111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210221000111100 is an abundant number, since it is smaller than the sum of its proper divisors (468743942101380).

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

210221000111100 is a wasteful number, since it uses less digits than its factorization.

210221000111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481472940 (or 1481472933 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210221000111100 its reverse (1111000122012), we get a palindrome (211332000233112).

The spelling of 210221000111100 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred eleven thousand, one hundred".