20102212320 has 48 divisors (see below), whose sum is σ = 63321970320. Its totient is φ = 5360589824.

The previous prime is 20102212303. The next prime is 20102212337. The reversal of 20102212320 is 2321220102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20102212303) and next prime (20102212337).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20102212320.

It is a congruent number.

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, 20939325 + ... + 20940284.

It is an arithmetic number, because the mean of its divisors is an integer number (1319207715).

Almost surely, 2^20102212320 is an apocalyptic number.

20102212320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102212320 is an abundant number, since it is smaller than the sum of its proper divisors (43219758000).

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

20102212320 is a wasteful number, since it uses less digits than its factorization.

20102212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41879627 (or 41879619 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20102212320 its reverse (2321220102), we get a palindrome (22423432422).

The spelling of 20102212320 in words is "twenty billion, one hundred two million, two hundred twelve thousand, three hundred twenty".