1232121232211 has 16 divisors (see below), whose sum is σ = 1317126726720. Its totient is φ = 1149738670080.

The previous prime is 1232121232201. The next prime is 1232121232241. The reversal of 1232121232211 is 1122321212321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232121232211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232121232201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24690161 + ... + 24740013.

It is an arithmetic number, because the mean of its divisors is an integer number (82320420420).

Almost surely, 2^{1232121232211} is an apocalyptic number.

1232121232211 is a deficient number, since it is larger than the sum of its proper divisors (85005494509).

1232121232211 is a wasteful number, since it uses less digits than its factorization.

1232121232211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76126.

The product of its digits is 576, while the sum is 23.

Adding to 1232121232211 its reverse (1122321212321), we get a palindrome (2354442444532).

The spelling of 1232121232211 in words is "one trillion, two hundred thirty-two billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred eleven".