20102021102020 has 48 divisors (see below), whose sum is σ = 49594356963648. Its totient is φ = 6747531557760.

The previous prime is 20102021101979. The next prime is 20102021102081. The reversal of 20102021102020 is 2020112020102.

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 15 ways as a sum of consecutive naturals, for example, 3514336494 + ... + 3514342213.

It is an arithmetic number, because the mean of its divisors is an integer number (1033215770076).

Almost surely, 2^{20102021102020} is an apocalyptic number.

20102021102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102021102020 is an abundant number, since it is smaller than the sum of its proper divisors (29492335861628).

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

20102021102020 is a wasteful number, since it uses less digits than its factorization.

20102021102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7028678740 (or 7028678738 counting only the distinct ones).

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

Adding to 20102021102020 its reverse (2020112020102), we get a palindrome (22122133122122).

The spelling of 20102021102020 in words is "twenty trillion, one hundred two billion, twenty-one million, one hundred two thousand, twenty".