20022121210 has 96 divisors (see below), whose sum is σ = 45267887232. Its totient is φ = 6241847040.

The previous prime is 20022121199. The next prime is 20022121243. The reversal of 20022121210 is 1212122002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 779980 + ... + 805240.

It is an arithmetic number, because the mean of its divisors is an integer number (471540492).

Almost surely, 2^20022121210 is an apocalyptic number.

20022121210 is an abundant number, since it is smaller than the sum of its proper divisors (25245766022).

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

20022121210 is a wasteful number, since it uses less digits than its factorization.

20022121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25368 (or 25355 counting only the distinct ones).

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

Adding to 20022121210 its reverse (1212122002), we get a palindrome (21234243212).

It can be divided in two parts, 2002 and 2121210, that added together give a palindrome (2123212).

The spelling of 20022121210 in words is "twenty billion, twenty-two million, one hundred twenty-one thousand, two hundred ten".