121321313121 has 8 divisors (see below), whose sum is σ = 162665448480. Its totient is φ = 80429026592.

The previous prime is 121321313083. The next prime is 121321313147. The reversal of 121321313121 is 121313123121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121321313121 - 2²² = 121317118817 is a prime.

It is a super-2 number, since 2×121321313121² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121321312121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112961580 + ... + 112962653.

It is an arithmetic number, because the mean of its divisors is an integer number (20333181060).

Almost surely, 2^121321313121 is an apocalyptic number.

It is an amenable number.

121321313121 is a deficient number, since it is larger than the sum of its proper divisors (41344135359).

121321313121 is a wasteful number, since it uses less digits than its factorization.

121321313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225924415.

The product of its digits is 216, while the sum is 21.

Adding to 121321313121 its reverse (121313123121), we get a palindrome (242634436242).

The spelling of 121321313121 in words is "one hundred twenty-one billion, three hundred twenty-one million, three hundred thirteen thousand, one hundred twenty-one".