222221120220100 has 72 divisors (see below), whose sum is σ = 482392239170688. Its totient is φ = 88856673091200.

The previous prime is 222221120220097. The next prime is 222221120220131. The reversal of 222221120220100 is 1022021122222.

It is a super-2 number, since 2×222221120220100² (a number of 29 digits) contains 22 as substring.

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, 4249674955 + ... + 4249727245.

It is an arithmetic number, because the mean of its divisors is an integer number (6699892210704).

Almost surely, 2^{222221120220100} is an apocalyptic number.

222221120220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221120220100 is an abundant number, since it is smaller than the sum of its proper divisors (260171118950588).

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

222221120220100 is a wasteful number, since it uses less digits than its factorization.

222221120220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66685 (or 66678 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222221120220100 its reverse (1022021122222), we get a palindrome (223243141342322).

The spelling of 222221120220100 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty million, two hundred twenty thousand, one hundred".