102200021010 has 48 divisors (see below), whose sum is σ = 272901686616. Its totient is φ = 26516761344.

The previous prime is 102200021003. The next prime is 102200021129. The reversal of 102200021010 is 10120002201.

It can be written as a sum of positive squares in 4 ways, for example, as 76243911129 + 25956109881 = 276123^2 + 161109^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102200020983 and 102200021001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15342019 + ... + 15348678.

Almost surely, 2^102200021010 is an apocalyptic number.

102200021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102200021010 is an abundant number, since it is smaller than the sum of its proper divisors (170701665606).

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

102200021010 is a wasteful number, since it uses less digits than its factorization.

102200021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30690747 (or 30690744 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102200021010 its reverse (10120002201), we get a palindrome (112320023211).

The spelling of 102200021010 in words is "one hundred two billion, two hundred million, twenty-one thousand, ten".