121310132121 has 6 divisors (see below), whose sum is σ = 175225746410. Its totient is φ = 80873421408.

The previous prime is 121310132107. The next prime is 121310132149. The reversal of 121310132121 is 121231013121.

121310132121 is a `hidden beast` number, since 12 + 1 + 310 + 1 + 321 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100628528400 + 20681603721 = 317220^2 + 143811^2 .

It is not a de Polignac number, because 121310132121 - 2⁵ = 121310132089 is a prime.

It is a super-2 number, since 2×121310132121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121310132094 and 121310132103.

It is not an unprimeable number, because it can be changed into a prime (121310132161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6739451776 + ... + 6739451793.

Almost surely, 2^121310132121 is an apocalyptic number.

It is an amenable number.

121310132121 is a deficient number, since it is larger than the sum of its proper divisors (53915614289).

121310132121 is a wasteful number, since it uses less digits than its factorization.

121310132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13478903575 (or 13478903572 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121310132121 its reverse (121231013121), we get a palindrome (242541145242).

The spelling of 121310132121 in words is "one hundred twenty-one billion, three hundred ten million, one hundred thirty-two thousand, one hundred twenty-one".