121214431 has 16 divisors (see below), whose sum is σ = 132945120. Its totient is φ = 109848960.

The previous prime is 121214419. The next prime is 121214447. The reversal of 121214431 is 134412121.

It is not a de Polignac number, because 121214431 - 2¹¹ = 121212383 is a prime.

It is a super-2 number, since 2×121214431² = 29385876565307522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121214399 and 121214408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121214411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185301 + ... + 185953.

It is an arithmetic number, because the mean of its divisors is an integer number (8309070).

Almost surely, 2^121214431 is an apocalyptic number.

121214431 is a deficient number, since it is larger than the sum of its proper divisors (11730689).

121214431 is a wasteful number, since it uses less digits than its factorization.

121214431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its digits is 192, while the sum is 19.

The square root of 121214431 is about 11009.7425492152. The cubic root of 121214431 is about 494.9007466883.

Adding to 121214431 its reverse (134412121), we get a palindrome (255626552).

The spelling of 121214431 in words is "one hundred twenty-one million, two hundred fourteen thousand, four hundred thirty-one".