100121202122202 has 48 divisors (see below), whose sum is σ = 219210612769512. Its totient is φ = 33022899578880.

The previous prime is 100121202122129. The next prime is 100121202122297. The reversal of 100121202122202 is 202221202121001.

It is a happy number.

100121202122202 is a `hidden beast` number, since 100 + 12 + 120 + 212 + 220 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 81792109122201 + 18329093000001 = 9043899^2 + 4281249^2 .

It is a super-2 number, since 2×100121202122202² (a number of 29 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 2636302 + ... + 14394182.

Almost surely, 2^{100121202122202} is an apocalyptic number.

100121202122202 is an abundant number, since it is smaller than the sum of its proper divisors (119089410647310).

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

100121202122202 is a wasteful number, since it uses less digits than its factorization.

100121202122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11762863 (or 11762860 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100121202122202 its reverse (202221202121001), we get a palindrome (302342404243203).

The spelling of 100121202122202 in words is "one hundred trillion, one hundred twenty-one billion, two hundred two million, one hundred twenty-two thousand, two hundred two".