121311102130 has 16 divisors (see below), whose sum is σ = 218382484824. Its totient is φ = 48519440640.

The previous prime is 121311102071. The next prime is 121311102149. The reversal of 121311102130 is 31201113121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 112111798561 + 9199303569 = 334831^2 + 95913^2 .

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, 522327 + ... + 717946.

Almost surely, 2^121311102130 is an apocalyptic number.

121311102130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121311102130 is a deficient number, since it is larger than the sum of its proper divisors (97071382694).

121311102130 is a wasteful number, since it uses less digits than its factorization.

121311102130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250061.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121311102130 its reverse (31201113121), we get a palindrome (152512215251).

The spelling of 121311102130 in words is "one hundred twenty-one billion, three hundred eleven million, one hundred two thousand, one hundred thirty".