121423001023131 has 4 divisors (see below), whose sum is σ = 161897334697512. Its totient is φ = 80948667348752.

The previous prime is 121423001023073. The next prime is 121423001023141. The reversal of 121423001023131 is 131320100324121.

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 121423001023131 - 2¹⁵ = 121423000990363 is a prime.

It is a super-2 number, since 2×121423001023131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121423001023141) 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, 20237166837186 + ... + 20237166837191.

It is an arithmetic number, because the mean of its divisors is an integer number (40474333674378).

Almost surely, 2^{121423001023131} is an apocalyptic number.

121423001023131 is a deficient number, since it is larger than the sum of its proper divisors (40474333674381).

121423001023131 is an equidigital number, since it uses as much as digits as its factorization.

121423001023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40474333674380.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 121423001023131 its reverse (131320100324121), we get a palindrome (252743101347252).

The spelling of 121423001023131 in words is "one hundred twenty-one trillion, four hundred twenty-three billion, one million, twenty-three thousand, one hundred thirty-one".