100231211202020 has 48 divisors (see below), whose sum is σ = 214532674902000. Its totient is φ = 39322136395776.

The previous prime is 100231211201963. The next prime is 100231211202029. The reversal of 100231211202020 is 20202112132001.

It can be written as a sum of positive squares in 8 ways, for example, as 284524094464 + 99946687107556 = 533408^2 + 9997334^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100231211202020.

It is not an unprimeable number, because it can be changed into a prime (100231211202029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13685645 + ... + 19691604.

It is an arithmetic number, because the mean of its divisors is an integer number (4469430727125).

Almost surely, 2^{100231211202020} is an apocalyptic number.

100231211202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100231211202020 is an abundant number, since it is smaller than the sum of its proper divisors (114301463699980).

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

100231211202020 is a wasteful number, since it uses less digits than its factorization.

100231211202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33380144 (or 33380142 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 100231211202020 its reverse (20202112132001), we get a palindrome (120433323334021).

The spelling of 100231211202020 in words is "one hundred trillion, two hundred thirty-one billion, two hundred eleven million, two hundred two thousand, twenty".