102110220101020 has 48 divisors (see below), whose sum is σ = 225721132791840. Its totient is φ = 38693747056896.

The previous prime is 102110220100991. The next prime is 102110220101027. The reversal of 102110220101020 is 20101022011201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110220101027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20616234 + ... + 25084846.

It is an arithmetic number, because the mean of its divisors is an integer number (4702523599830).

Almost surely, 2^{102110220101020} is an apocalyptic number.

102110220101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102110220101020 is an abundant number, since it is smaller than the sum of its proper divisors (123610912690820).

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

102110220101020 is a wasteful number, since it uses less digits than its factorization.

102110220101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528774 (or 4528772 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102110220101020 its reverse (20101022011201), we get a palindrome (122211242112221).

The spelling of 102110220101020 in words is "one hundred two trillion, one hundred ten billion, two hundred twenty million, one hundred one thousand, twenty".