121012122321 has 6 divisors (see below), whose sum is σ = 174795287810. Its totient is φ = 80674748208.

The previous prime is 121012122317. The next prime is 121012122359. The reversal of 121012122321 is 123221210121.

121012122321 is a `hidden beast` number, since 1 + 210 + 12 + 122 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 68497358400 + 52514763921 = 261720^2 + 229161^2 .

It is not a de Polignac number, because 121012122321 - 2² = 121012122317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121012122294 and 121012122303.

It is not an unprimeable number, because it can be changed into a prime (121012122391) 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, 6722895676 + ... + 6722895693.

Almost surely, 2^121012122321 is an apocalyptic number.

It is an amenable number.

121012122321 is a deficient number, since it is larger than the sum of its proper divisors (53783165489).

121012122321 is a wasteful number, since it uses less digits than its factorization.

121012122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13445791375 (or 13445791372 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121012122321 its reverse (123221210121), we get a palindrome (244233332442).

The spelling of 121012122321 in words is "one hundred twenty-one billion, twelve million, one hundred twenty-two thousand, three hundred twenty-one".