121431222311 has 16 divisors (see below), whose sum is σ = 139576120320. Its totient is φ = 103485975840.

The previous prime is 121431222307. The next prime is 121431222317. The reversal of 121431222311 is 113222134121.

It is a cyclic number.

It is not a de Polignac number, because 121431222311 - 2² = 121431222307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121431222317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8287730 + ... + 8302368.

It is an arithmetic number, because the mean of its divisors is an integer number (8723507520).

Almost surely, 2^121431222311 is an apocalyptic number.

121431222311 is a deficient number, since it is larger than the sum of its proper divisors (18144898009).

121431222311 is a wasteful number, since it uses less digits than its factorization.

121431222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21374.

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

Adding to 121431222311 its reverse (113222134121), we get a palindrome (234653356432).

The spelling of 121431222311 in words is "one hundred twenty-one billion, four hundred thirty-one million, two hundred twenty-two thousand, three hundred eleven".