220202012100100 has 72 divisors (see below), whose sum is σ = 505949395369320. Its totient is φ = 82899107512320.

The previous prime is 220202012100079. The next prime is 220202012100127. The reversal of 220202012100100 is 1001210202022.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 21289125192196 + 198912886907904 = 4614014^2 + 14103648^2 .

It is a super-2 number, since 2×220202012100100² (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, 483213156 + ... + 483668644.

It is an arithmetic number, because the mean of its divisors is an integer number (7027074935685).

Almost surely, 2^{220202012100100} is an apocalyptic number.

220202012100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220202012100100 is an abundant number, since it is smaller than the sum of its proper divisors (285747383269220).

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

220202012100100 is a wasteful number, since it uses less digits than its factorization.

220202012100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739897 (or 739890 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220202012100100 its reverse (1001210202022), we get a palindrome (221203222302122).

The spelling of 220202012100100 in words is "two hundred twenty trillion, two hundred two billion, twelve million, one hundred thousand, one hundred".