102121320130 has 16 divisors (see below), whose sum is σ = 184136962680. Its totient is φ = 40777731072.

The previous prime is 102121320113. The next prime is 102121320149. The reversal of 102121320130 is 31023121201.

It can be written as a sum of positive squares in 4 ways, for example, as 100662156529 + 1459163601 = 317273^2 + 38199^2 .

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, 8843565 + ... + 8855104.

Almost surely, 2^102121320130 is an apocalyptic number.

102121320130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121320130 is a deficient number, since it is larger than the sum of its proper divisors (82015642550).

102121320130 is a wasteful number, since it uses less digits than its factorization.

102121320130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17699253.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 102121320130 its reverse (31023121201), we get a palindrome (133144441331).

The spelling of 102121320130 in words is "one hundred two billion, one hundred twenty-one million, three hundred twenty thousand, one hundred thirty".