102001312220 has 48 divisors (see below), whose sum is σ = 219225201888. Its totient is φ = 39844224000.

The previous prime is 102001312211. The next prime is 102001312243. The reversal of 102001312220 is 22213100201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102001312195 and 102001312204.

It is a congruent number.

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, 7734272 + ... + 7747448.

It is an arithmetic number, because the mean of its divisors is an integer number (4567191706).

Almost surely, 2^102001312220 is an apocalyptic number.

102001312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102001312220 is an abundant number, since it is smaller than the sum of its proper divisors (117223889668).

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

102001312220 is a wasteful number, since it uses less digits than its factorization.

102001312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22230 (or 22228 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102001312220 its reverse (22213100201), we get a palindrome (124214412421).

The spelling of 102001312220 in words is "one hundred two billion, one million, three hundred twelve thousand, two hundred twenty".