121232223311 has 16 divisors (see below), whose sum is σ = 126227447808. Its totient is φ = 116309174400.

The previous prime is 121232223283. The next prime is 121232223337. The reversal of 121232223311 is 113322232121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121232223311 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 (121232229311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1629650 + ... + 1702416.

It is an arithmetic number, because the mean of its divisors is an integer number (7889215488).

Almost surely, 2^121232223311 is an apocalyptic number.

121232223311 is a deficient number, since it is larger than the sum of its proper divisors (4995224497).

121232223311 is a wasteful number, since it uses less digits than its factorization.

121232223311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73262.

The product of its digits is 864, while the sum is 23.

Adding to 121232223311 its reverse (113322232121), we get a palindrome (234554455432).

The spelling of 121232223311 in words is "one hundred twenty-one billion, two hundred thirty-two million, two hundred twenty-three thousand, three hundred eleven".