20100020220100 has 72 divisors (see below), whose sum is σ = 45091512132128. Its totient is φ = 7772071910400.

The previous prime is 20100020220079. The next prime is 20100020220127. The reversal of 20100020220100 is 102202000102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23677866 + ... + 24512065.

Almost surely, 2^{20100020220100} is an apocalyptic number.

20100020220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100020220100 is an abundant number, since it is smaller than the sum of its proper divisors (24991491912028).

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

20100020220100 is a wasteful number, since it uses less digits than its factorization.

20100020220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48190085 (or 48190078 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20100020220100 its reverse (102202000102), we get a palindrome (20202222220202).

The spelling of 20100020220100 in words is "twenty trillion, one hundred billion, twenty million, two hundred twenty thousand, one hundred".