100122212121210 has 24 divisors (see below), whose sum is σ = 260317751515380. Its totient is φ = 26699256565632.

The previous prime is 100122212121187. The next prime is 100122212121241. The reversal of 100122212121210 is 12121212221001.

100122212121210 is a `hidden beast` number, since 1 + 0 + 0 + 122 + 212 + 121 + 210 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 98848792406529 + 1273419714681 = 9942273^2 + 1128459^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 556234511695 + ... + 556234511874.

Almost surely, 2^{100122212121210} is an apocalyptic number.

100122212121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100122212121210 is an abundant number, since it is smaller than the sum of its proper divisors (160195539394170).

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

100122212121210 is a wasteful number, since it uses less digits than its factorization.

100122212121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112469023582 (or 1112469023579 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 100122212121210 its reverse (12121212221001), we get a palindrome (112243424342211).

The spelling of 100122212121210 in words is "one hundred trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, two hundred ten".