101220012222100 has 18 divisors (see below), whose sum is σ = 219647426522174. Its totient is φ = 40488004888800.

The previous prime is 101220012222097. The next prime is 101220012222143. The reversal of 101220012222100 is 1222210022101.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 87785393796 + 101132226828304 = 296286^2 + 10056452^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506100061011 + ... + 506100061210.

Almost surely, 2^{101220012222100} is an apocalyptic number.

101220012222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101220012222100 is an abundant number, since it is smaller than the sum of its proper divisors (118427414300074).

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

101220012222100 is a wasteful number, since it uses less digits than its factorization.

101220012222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012200122235 (or 1012200122228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101220012222100 its reverse (1222210022101), we get a palindrome (102442222244201).

The spelling of 101220012222100 in words is "one hundred one trillion, two hundred twenty billion, twelve million, two hundred twenty-two thousand, one hundred".