102220021010 has 16 divisors (see below), whose sum is σ = 184143375000. Its totient is φ = 40855266816.

The previous prime is 102220021009. The next prime is 102220021039. The reversal of 102220021010 is 10120022201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 98934782521 + 3285238489 = 314539^2 + 57317^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102220020982 and 102220021000.

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, 4079585 + ... + 4104564.

Almost surely, 2^102220021010 is an apocalyptic number.

102220021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102220021010 is a deficient number, since it is larger than the sum of its proper divisors (81923353990).

102220021010 is a wasteful number, since it uses less digits than its factorization.

102220021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8185405.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102220021010 its reverse (10120022201), we get a palindrome (112340043211).

The spelling of 102220021010 in words is "one hundred two billion, two hundred twenty million, twenty-one thousand, ten".