122265551 has 4 divisors (see below), whose sum is σ = 128700600. Its totient is φ = 115830504.

The previous prime is 122265529. The next prime is 122265571. The reversal of 122265551 is 155562221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155562221 = 3581 ⋅43441.

It is a cyclic number.

It is not a de Polignac number, because 122265551 - 2⁶ = 122265487 is a prime.

It is a super-2 number, since 2×122265551² = 29897729922667202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122265571) 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, 3217496 + ... + 3217533.

It is an arithmetic number, because the mean of its divisors is an integer number (32175150).

Almost surely, 2^122265551 is an apocalyptic number.

122265551 is a deficient number, since it is larger than the sum of its proper divisors (6435049).

122265551 is an equidigital number, since it uses as much as digits as its factorization.

122265551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435048.

The product of its digits is 6000, while the sum is 29.

The square root of 122265551 is about 11057.3754119140. The cubic root of 122265551 is about 496.3271544727.

The spelling of 122265551 in words is "one hundred twenty-two million, two hundred sixty-five thousand, five hundred fifty-one".