121056451 has 4 divisors (see below), whose sum is σ = 121095000. Its totient is φ = 121017904.

The previous prime is 121056449. The next prime is 121056461. The reversal of 121056451 is 154650121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121056451 - 2¹ = 121056449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121056421) 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, 14101 + ... + 20998.

It is an arithmetic number, because the mean of its divisors is an integer number (30273750).

Almost surely, 2^121056451 is an apocalyptic number.

121056451 is a deficient number, since it is larger than the sum of its proper divisors (38549).

121056451 is an equidigital number, since it uses as much as digits as its factorization.

121056451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38548.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 121056451 is about 11002.5656553369. The cubic root of 121056451 is about 494.6856501576.

The spelling of 121056451 in words is "one hundred twenty-one million, fifty-six thousand, four hundred fifty-one".