121232013311 has 4 divisors (see below), whose sum is σ = 121233204624. Its totient is φ = 121230822000.

The previous prime is 121232013307. The next prime is 121232013421. The reversal of 121232013311 is 113310232121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113310232121 = 113 ⋅1002745417.

It is a cyclic number.

It is not a de Polignac number, because 121232013311 - 2² = 121232013307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232018311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427115 + ... + 651836.

It is an arithmetic number, because the mean of its divisors is an integer number (30308301156).

Almost surely, 2^121232013311 is an apocalyptic number.

121232013311 is a deficient number, since it is larger than the sum of its proper divisors (1191313).

121232013311 is a wasteful number, since it uses less digits than its factorization.

121232013311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191312.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121232013311 its reverse (113310232121), we get a palindrome (234542245432).

The spelling of 121232013311 in words is "one hundred twenty-one billion, two hundred thirty-two million, thirteen thousand, three hundred eleven".