102102020122220 has 24 divisors (see below), whose sum is σ = 227026844743104. Its totient is φ = 38438407575296.

The previous prime is 102102020122217. The next prime is 102102020122229. The reversal of 102102020122220 is 22221020201201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (102102020122229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150150029252 + ... + 150150029931.

It is an arithmetic number, because the mean of its divisors is an integer number (9459451864296).

Almost surely, 2^{102102020122220} is an apocalyptic number.

102102020122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102020122220 is an abundant number, since it is smaller than the sum of its proper divisors (124924824620884).

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

102102020122220 is a wasteful number, since it uses less digits than its factorization.

102102020122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300300059209 (or 300300059207 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102102020122220 its reverse (22221020201201), we get a palindrome (124323040323421).

The spelling of 102102020122220 in words is "one hundred two trillion, one hundred two billion, twenty million, one hundred twenty-two thousand, two hundred twenty".