102102201201220 has 48 divisors (see below), whose sum is σ = 233911180819008. Its totient is φ = 37127387468160.

The previous prime is 102102201201179. The next prime is 102102201201229. The reversal of 102102201201220 is 22102102201201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102102201201194 and 102102201201203.

It is not an unprimeable number, because it can be changed into a prime (102102201201229) 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, 7730107 + ... + 16246813.

It is an arithmetic number, because the mean of its divisors is an integer number (4873149600396).

Almost surely, 2^{102102201201220} is an apocalyptic number.

102102201201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102201201220 is an abundant number, since it is smaller than the sum of its proper divisors (131808979617788).

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

102102201201220 is a wasteful number, since it uses less digits than its factorization.

102102201201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571220 (or 8571218 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102102201201220 its reverse (22102102201201), we get a palindrome (124204303402421).

The spelling of 102102201201220 in words is "one hundred two trillion, one hundred two billion, two hundred one million, two hundred one thousand, two hundred twenty".