102001122010 has 16 divisors (see below), whose sum is σ = 183654109800. Its totient is φ = 40788873216.

The previous prime is 102001121951. The next prime is 102001122073. The reversal of 102001122010 is 10221100201.

It can be written as a sum of positive squares in 4 ways, for example, as 30090800089 + 71910321921 = 173467^2 + 268161^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1409895 + ... + 1480474.

Almost surely, 2^102001122010 is an apocalyptic number.

102001122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102001122010 is a deficient number, since it is larger than the sum of its proper divisors (81652987790).

102001122010 is a wasteful number, since it uses less digits than its factorization.

102001122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893905.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102001122010 its reverse (10221100201), we get a palindrome (112222222211).

The spelling of 102001122010 in words is "one hundred two billion, one million, one hundred twenty-two thousand, ten".