221120211010100 has 36 divisors (see below), whose sum is σ = 479838496745664. Its totient is φ = 88446676320480.

The previous prime is 221120211010099. The next prime is 221120211010133. The reversal of 221120211010100 is 1010112021122.

It is a super-2 number, since 2×221120211010100² (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 11 ways as a sum of consecutive naturals, for example, 11276882 + ... + 23862281.

It is an arithmetic number, because the mean of its divisors is an integer number (13328847131824).

Almost surely, 2^{221120211010100} is an apocalyptic number.

221120211010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221120211010100 is an abundant number, since it is smaller than the sum of its proper divisors (258718285735564).

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

221120211010100 is a wasteful number, since it uses less digits than its factorization.

221120211010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35202104 (or 35202097 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221120211010100 its reverse (1010112021122), we get a palindrome (222130323031222).

The spelling of 221120211010100 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred eleven million, ten thousand, one hundred".