212201220111100 has 72 divisors (see below), whose sum is σ = 502530119795088. Its totient is φ = 77134593292800.

The previous prime is 212201220111077. The next prime is 212201220111121. The reversal of 212201220111100 is 1111022102212.

It is a super-2 number, since 2×212201220111100² (a number of 29 digits) contains 22 as substring.

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, 33978427 + ... + 39735826.

It is an arithmetic number, because the mean of its divisors is an integer number (6979584997154).

Almost surely, 2^{212201220111100} is an apocalyptic number.

212201220111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212201220111100 is an abundant number, since it is smaller than the sum of its proper divisors (290328899683988).

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

212201220111100 is a wasteful number, since it uses less digits than its factorization.

212201220111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73716895 (or 73716888 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212201220111100 its reverse (1111022102212), we get a palindrome (213312242213312).

The spelling of 212201220111100 in words is "two hundred twelve trillion, two hundred one billion, two hundred twenty million, one hundred eleven thousand, one hundred".