121010451431 has 4 divisors (see below), whose sum is σ = 121195766712. Its totient is φ = 120825136152.

The previous prime is 121010451427. The next prime is 121010451437. The reversal of 121010451431 is 134154010121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134154010121 = 29 ⋅4626000349.

It is a cyclic number.

It is not a de Polignac number, because 121010451431 - 2² = 121010451427 is a prime.

It is a super-2 number, since 2×121010451431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010451397 and 121010451406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010451437) 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, 92656661 + ... + 92657966.

It is an arithmetic number, because the mean of its divisors is an integer number (30298941678).

Almost surely, 2^121010451431 is an apocalyptic number.

121010451431 is a deficient number, since it is larger than the sum of its proper divisors (185315281).

121010451431 is an equidigital number, since it uses as much as digits as its factorization.

121010451431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185315280.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 121010451431 its reverse (134154010121), we get a palindrome (255164461552).

The spelling of 121010451431 in words is "one hundred twenty-one billion, ten million, four hundred fifty-one thousand, four hundred thirty-one".