121056465 has 16 divisors (see below), whose sum is σ = 195868800. Its totient is φ = 63837312.

The previous prime is 121056461. The next prime is 121056487. The reversal of 121056465 is 564650121.

It is not a de Polignac number, because 121056465 - 2² = 121056461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121056461) 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, 44005 + ... + 46674.

It is an arithmetic number, because the mean of its divisors is an integer number (12241800).

Almost surely, 2^121056465 is an apocalyptic number.

121056465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121056465 is a deficient number, since it is larger than the sum of its proper divisors (74812335).

121056465 is an equidigital number, since it uses as much as digits as its factorization.

121056465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90776.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 121056465 is about 11002.5662915522. The cubic root of 121056465 is about 494.6856692274.

It can be divided in two parts, 1210 and 56465, that added together give a palindrome (57675).

The spelling of 121056465 in words is "one hundred twenty-one million, fifty-six thousand, four hundred sixty-five".