121133203431431 has 4 divisors (see below), whose sum is σ = 127508635191000. Its totient is φ = 114757771671864.

The previous prime is 121133203431419. The next prime is 121133203431467. The reversal of 121133203431431 is 134134302331121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121133203431431 is a prime.

It is a super-2 number, since 2×121133203431431² (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 (121133203431131) 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, 3187715879756 + ... + 3187715879793.

It is an arithmetic number, because the mean of its divisors is an integer number (31877158797750).

Almost surely, 2^{121133203431431} is an apocalyptic number.

121133203431431 is a deficient number, since it is larger than the sum of its proper divisors (6375431759569).

121133203431431 is an equidigital number, since it uses as much as digits as its factorization.

121133203431431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375431759568.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 121133203431431 its reverse (134134302331121), we get a palindrome (255267505762552).

The spelling of 121133203431431 in words is "one hundred twenty-one trillion, one hundred thirty-three billion, two hundred three million, four hundred thirty-one thousand, four hundred thirty-one".