121215303411431 has 4 divisors (see below), whose sum is σ = 121215326886864. Its totient is φ = 121215279936000.

The previous prime is 121215303411421. The next prime is 121215303411487. The reversal of 121215303411431 is 134114303512121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121215303411431 - 2¹⁸ = 121215303149287 is a prime.

It is a super-2 number, since 2×121215303411431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121215303411421) 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, 234995 + ... + 15571956.

It is an arithmetic number, because the mean of its divisors is an integer number (30303831721716).

Almost surely, 2^{121215303411431} is an apocalyptic number.

121215303411431 is a deficient number, since it is larger than the sum of its proper divisors (23475433).

121215303411431 is an equidigital number, since it uses as much as digits as its factorization.

121215303411431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23475432.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 121215303411431 its reverse (134114303512121), we get a palindrome (255329606923552).

The spelling of 121215303411431 in words is "one hundred twenty-one trillion, two hundred fifteen billion, three hundred three million, four hundred eleven thousand, four hundred thirty-one".