20000000101220 has 24 divisors (see below), whose sum is σ = 42056527834944. Its totient is φ = 7989232874336.

The previous prime is 20000000101181. The next prime is 20000000101253. The reversal of 20000000101220 is 2210100000002.

It is a junction number, because it is equal to n+sod(n) for n = 20000000101198 and 20000000101207.

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, 672932654 + ... + 672962373.

It is an arithmetic number, because the mean of its divisors is an integer number (1752355326456).

Almost surely, 2^{20000000101220} is an apocalyptic number.

20000000101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000000101220 is an abundant number, since it is smaller than the sum of its proper divisors (22056527733724).

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

20000000101220 is a wasteful number, since it uses less digits than its factorization.

20000000101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345895779 (or 1345895777 counting only the distinct ones).

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

Adding to 20000000101220 its reverse (2210100000002), we get a palindrome (22210100101222).

The spelling of 20000000101220 in words is "twenty trillion, one hundred one thousand, two hundred twenty".