20102122020 has 24 divisors (see below), whose sum is σ = 56285941824. Its totient is φ = 5360565856.

The previous prime is 20102121997. The next prime is 20102122031. The reversal of 20102122020 is 2022120102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20102121987 and 20102122005.

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, 167517624 + ... + 167517743.

It is an arithmetic number, because the mean of its divisors is an integer number (2345247576).

Almost surely, 2^20102122020 is an apocalyptic number.

20102122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102122020 is an abundant number, since it is smaller than the sum of its proper divisors (36183819804).

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

20102122020 is a wasteful number, since it uses less digits than its factorization.

20102122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335035379 (or 335035377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20102122020 its reverse (2022120102), we get a palindrome (22124242122).

The spelling of 20102122020 in words is "twenty billion, one hundred two million, one hundred twenty-two thousand, twenty".