20002121222020 has 48 divisors (see below), whose sum is σ = 48015645350400. Its totient is φ = 6856362359424.

The previous prime is 20002121221997. The next prime is 20002121222053. The reversal of 20002121222020 is 2022212120002.

It is a junction number, because it is equal to n+sod(n) for n = 20002121221985 and 20002121222003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15066844 + ... + 16340563.

It is an arithmetic number, because the mean of its divisors is an integer number (1000325944800).

Almost surely, 2^{20002121222020} is an apocalyptic number.

20002121222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002121222020 is an abundant number, since it is smaller than the sum of its proper divisors (28013524128380).

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

20002121222020 is a wasteful number, since it uses less digits than its factorization.

20002121222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31411972 (or 31411970 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20002121222020 its reverse (2022212120002), we get a palindrome (22024333342022).

The spelling of 20002121222020 in words is "twenty trillion, two billion, one hundred twenty-one million, two hundred twenty-two thousand, twenty".