100211200220020 has 24 divisors (see below), whose sum is σ = 210468217864968. Its totient is φ = 40079775820800.

The previous prime is 100211200220017. The next prime is 100211200220057. The reversal of 100211200220020 is 20022002112001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24671843989776 + 75539356230244 = 4967076^2 + 8691338^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293842021 + ... + 294182860.

It is an arithmetic number, because the mean of its divisors is an integer number (8769509077707).

Almost surely, 2^{100211200220020} is an apocalyptic number.

100211200220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100211200220020 is an abundant number, since it is smaller than the sum of its proper divisors (110257017644948).

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

100211200220020 is a wasteful number, since it uses less digits than its factorization.

100211200220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588033411 (or 588033409 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100211200220020 its reverse (20022002112001), we get a palindrome (120233202332021).

The spelling of 100211200220020 in words is "one hundred trillion, two hundred eleven billion, two hundred million, two hundred twenty thousand, twenty".