221122203313100 has 72 divisors (see below), whose sum is σ = 500700811742880. Its totient is φ = 84602731783680.

The previous prime is 221122203313087. The next prime is 221122203313157. The reversal of 221122203313100 is 1313302221122.

It is a super-2 number, since 2×221122203313100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 690007706 + ... + 690328094.

Almost surely, 2^{221122203313100} is an apocalyptic number.

221122203313100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221122203313100 is an abundant number, since it is smaller than the sum of its proper divisors (279578608429780).

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

221122203313100 is a wasteful number, since it uses less digits than its factorization.

221122203313100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620499 (or 620492 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 221122203313100 its reverse (1313302221122), we get a palindrome (222435505534222).

The spelling of 221122203313100 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred three million, three hundred thirteen thousand, one hundred".