221101102021100 has 36 divisors (see below), whose sum is σ = 548330733014064. Its totient is φ = 75806092121280.

The previous prime is 221101102021081. The next prime is 221101102021103. The reversal of 221101102021100 is 1120201101122.

221101102021100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (221101102021103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157929357887 + ... + 157929359286.

Almost surely, 2^{221101102021100} is an apocalyptic number.

221101102021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221101102021100 is an abundant number, since it is smaller than the sum of its proper divisors (327229630992964).

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

221101102021100 is a wasteful number, since it uses less digits than its factorization.

221101102021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315858717194 (or 315858717187 counting only the distinct ones).

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

Adding to 221101102021100 its reverse (1120201101122), we get a palindrome (222221303122222).

It can be divided in two parts, 221101 and 102021100, that added together give a palindrome (102242201).

The spelling of 221101102021100 in words is "two hundred twenty-one trillion, one hundred one billion, one hundred two million, twenty-one thousand, one hundred".