212221120213100 has 18 divisors (see below), whose sum is σ = 460519830862644. Its totient is φ = 84888448085200.

The previous prime is 212221120213093. The next prime is 212221120213177. The reversal of 212221120213100 is 1312021122212.

It is a super-2 number, since 2×212221120213100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1061105600966 + ... + 1061105601165.

Almost surely, 2^{212221120213100} is an apocalyptic number.

212221120213100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221120213100 is an abundant number, since it is smaller than the sum of its proper divisors (248298710649544).

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

212221120213100 is a wasteful number, since it uses less digits than its factorization.

212221120213100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122211202145 (or 2122211202138 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 212221120213100 its reverse (1312021122212), we get a palindrome (213533141335312).

The spelling of 212221120213100 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred twenty million, two hundred thirteen thousand, one hundred".