100121000202 has 24 divisors (see below), whose sum is σ = 216951043140. Its totient is φ = 33370249920.

The previous prime is 100121000201. The next prime is 100121000237. The reversal of 100121000202 is 202000121001.

It can be written as a sum of positive squares in 2 ways, for example, as 100120983561 + 16641 = 316419^2 + 129^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100121000201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100827 + ... + 458702.

Almost surely, 2^100121000202 is an apocalyptic number.

100121000202 is an abundant number, since it is smaller than the sum of its proper divisors (116830042938).

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

100121000202 is a wasteful number, since it uses less digits than its factorization.

100121000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569478 (or 569475 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100121000202 its reverse (202000121001), we get a palindrome (302121121203).

The spelling of 100121000202 in words is "one hundred billion, one hundred twenty-one million, two hundred two", and thus it is an aban number.