102020022101220 has 48 divisors (see below), whose sum is σ = 302459359644288. Its totient is φ = 25605025154560.

The previous prime is 102020022101183. The next prime is 102020022101267. The reversal of 102020022101220 is 22101220020201.

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 102020022101220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50009813736 + ... + 50009815775.

It is an arithmetic number, because the mean of its divisors is an integer number (6301236659256).

Almost surely, 2^{102020022101220} is an apocalyptic number.

102020022101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020022101220 is an abundant number, since it is smaller than the sum of its proper divisors (200439337543068).

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

102020022101220 is a wasteful number, since it uses less digits than its factorization.

102020022101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100019629540 (or 100019629538 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102020022101220 its reverse (22101220020201), we get a palindrome (124121242121421).

The spelling of 102020022101220 in words is "one hundred two trillion, twenty billion, twenty-two million, one hundred one thousand, two hundred twenty".