121454654431 has 16 divisors (see below), whose sum is σ = 135501696000. Its totient is φ = 107936244000.

The previous prime is 121454654411. The next prime is 121454654513. The reversal of 121454654431 is 134456454121.

It is a cyclic number.

It is not a de Polignac number, because 121454654431 - 2¹¹ = 121454652383 is a prime.

It is a super-2 number, since 2×121454654431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121454654411) 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, 604131 + ... + 779668.

It is an arithmetic number, because the mean of its divisors is an integer number (8468856000).

Almost surely, 2^121454654431 is an apocalyptic number.

121454654431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121454654431 is a deficient number, since it is larger than the sum of its proper divisors (14047041569).

121454654431 is a wasteful number, since it uses less digits than its factorization.

121454654431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383990.

The product of its digits is 230400, while the sum is 40.

It can be divided in two parts, 1214 and 54654431, that added together give a palindrome (54655645).

The spelling of 121454654431 in words is "one hundred twenty-one billion, four hundred fifty-four million, six hundred fifty-four thousand, four hundred thirty-one".