121554131 has 8 divisors (see below), whose sum is σ = 132856704. Its totient is φ = 110712960.

The previous prime is 121554127. The next prime is 121554133. The reversal of 121554131 is 131455121.

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

It is a cyclic number.

It is not a de Polignac number, because 121554131 - 2² = 121554127 is a prime.

It is a super-2 number, since 2×121554131² = 29550813526330322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121554097 and 121554106.

It is not an unprimeable number, because it can be changed into a prime (121554133) 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, 114800 + ... + 115853.

It is an arithmetic number, because the mean of its divisors is an integer number (16607088).

Almost surely, 2^121554131 is an apocalyptic number.

121554131 is a deficient number, since it is larger than the sum of its proper divisors (11302573).

121554131 is a wasteful number, since it uses less digits than its factorization.

121554131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230701.

The product of its digits is 600, while the sum is 23.

The square root of 121554131 is about 11025.1590011210. The cubic root of 121554131 is about 495.3626305798.

The spelling of 121554131 in words is "one hundred twenty-one million, five hundred fifty-four thousand, one hundred thirty-one".