222100101220100 has 18 divisors (see below), whose sum is σ = 481957219647834. Its totient is φ = 88840040488000.

The previous prime is 222100101220061. The next prime is 222100101220103. The reversal of 222100101220100 is 1022101001222.

It can be written as a sum of positive squares in 3 ways, for example, as 1423668966976 + 220676432253124 = 1193176^2 + 14855182^2 .

It is not an unprimeable number, because it can be changed into a prime (222100101220103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1110500506001 + ... + 1110500506200.

Almost surely, 2^{222100101220100} is an apocalyptic number.

222100101220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222100101220100 is an abundant number, since it is smaller than the sum of its proper divisors (259857118427734).

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

222100101220100 is a wasteful number, since it uses less digits than its factorization.

222100101220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221001012215 (or 2221001012208 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222100101220100 its reverse (1022101001222), we get a palindrome (223122202221322).

The spelling of 222100101220100 in words is "two hundred twenty-two trillion, one hundred billion, one hundred one million, two hundred twenty thousand, one hundred".