121012431 has 8 divisors (see below), whose sum is σ = 161402160. Its totient is φ = 80648832.

The previous prime is 121012417. The next prime is 121012439. The reversal of 121012431 is 134210121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121012431 - 2¹³ = 121004239 is a prime.

It is a super-2 number, since 2×121012431² = 29288016913059522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121012431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11001 + ... + 19053.

It is an arithmetic number, because the mean of its divisors is an integer number (20175270).

Almost surely, 2^121012431 is an apocalyptic number.

121012431 is a deficient number, since it is larger than the sum of its proper divisors (40389729).

121012431 is an equidigital number, since it uses as much as digits as its factorization.

121012431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13065.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121012431 is about 11000.5650309427. The cubic root of 121012431 is about 494.6256817099.

Adding to 121012431 its reverse (134210121), we get a palindrome (255222552).

The spelling of 121012431 in words is "one hundred twenty-one million, twelve thousand, four hundred thirty-one".