121231323223211 has 32 divisors (see below), whose sum is σ = 125205490872576. Its totient is φ = 117320519680000.

The previous prime is 121231323223207. The next prime is 121231323223253. The reversal of 121231323223211 is 112322323132121.

It is a cyclic number.

It is not a de Polignac number, because 121231323223211 - 2² = 121231323223207 is a prime.

It is a super-2 number, since 2×121231323223211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121231323223201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6588291611 + ... + 6588310011.

It is an arithmetic number, because the mean of its divisors is an integer number (3912671589768).

Almost surely, 2^{121231323223211} is an apocalyptic number.

121231323223211 is a deficient number, since it is larger than the sum of its proper divisors (3974167649365).

121231323223211 is a wasteful number, since it uses less digits than its factorization.

121231323223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21463.

The product of its digits is 5184, while the sum is 29.

Adding to 121231323223211 its reverse (112322323132121), we get a palindrome (233553646355332).

The spelling of 121231323223211 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, three hundred twenty-three million, two hundred twenty-three thousand, two hundred eleven".