220212121100 has 18 divisors (see below), whose sum is σ = 477860303004. Its totient is φ = 88084848400.

The previous prime is 220212121097. The next prime is 220212121109. The reversal of 220212121100 is 1121212022.

It is a super-2 number, since 2×220212121100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220212121109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1101060506 + ... + 1101060705.

Almost surely, 2^220212121100 is an apocalyptic number.

220212121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220212121100 is an abundant number, since it is smaller than the sum of its proper divisors (257648181904).

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

220212121100 is a wasteful number, since it uses less digits than its factorization.

220212121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202121225 (or 2202121218 counting only the distinct ones).

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

Adding to 220212121100 its reverse (1121212022), we get a palindrome (221333333122).

The spelling of 220212121100 in words is "two hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, one hundred".