122251145 has 8 divisors (see below), whose sum is σ = 150666504. Its totient is φ = 95157504.

The previous prime is 122251133. The next prime is 122251159. The reversal of 122251145 is 541152221.

It can be written as a sum of positive squares in 4 ways, for example, as 7268416 + 114982729 = 2696^2 + 10723^2 .

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 122251145 - 2²⁶ = 55142281 is a prime.

It is a super-2 number, since 2×122251145² = 29890684907622050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122251145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330224 + ... + 330593.

It is an arithmetic number, because the mean of its divisors is an integer number (18833313).

Almost surely, 2^122251145 is an apocalyptic number.

It is an amenable number.

122251145 is a deficient number, since it is larger than the sum of its proper divisors (28415359).

122251145 is an equidigital number, since it uses as much as digits as its factorization.

122251145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660859.

The product of its digits is 800, while the sum is 23.

The square root of 122251145 is about 11056.7239723166. The cubic root of 122251145 is about 496.3076603749.

The spelling of 122251145 in words is "one hundred twenty-two million, two hundred fifty-one thousand, one hundred forty-five".