100020202121020 has 12 divisors (see below), whose sum is σ = 210042424454184. Its totient is φ = 40008080848400.

The previous prime is 100020202120957. The next prime is 100020202121033. The reversal of 100020202121020 is 20121202020001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500505053006 + ... + 2500505053045.

It is an arithmetic number, because the mean of its divisors is an integer number (17503535371182).

Almost surely, 2^{100020202121020} is an apocalyptic number.

100020202121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020202121020 is an abundant number, since it is smaller than the sum of its proper divisors (110022222333164).

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

100020202121020 is a wasteful number, since it uses less digits than its factorization.

100020202121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001010106060 (or 5001010106058 counting only the distinct ones).

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

Adding to 100020202121020 its reverse (20121202020001), we get a palindrome (120141404141021).

The spelling of 100020202121020 in words is "one hundred trillion, twenty billion, two hundred two million, one hundred twenty-one thousand, twenty".