121212013201231 has 2 divisors, whose sum is σ = 121212013201232. Its totient is φ = 121212013201230.

The previous prime is 121212013201171. The next prime is 121212013201259. The reversal of 121212013201231 is 132102310212121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121212013201231 - 2²³ = 121212004812623 is a prime.

It is a super-2 number, since 2×121212013201231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121212013201271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606006600615 + 60606006600616.

It is an arithmetic number, because the mean of its divisors is an integer number (60606006600616).

Almost surely, 2^{121212013201231} is an apocalyptic number.

121212013201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212013201231 is an equidigital number, since it uses as much as digits as its factorization.

121212013201231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 121212013201231 its reverse (132102310212121), we get a palindrome (253314323413352).

The spelling of 121212013201231 in words is "one hundred twenty-one trillion, two hundred twelve billion, thirteen million, two hundred one thousand, two hundred thirty-one".