122621345 has 32 divisors (see below), whose sum is σ = 193121280. Its totient is φ = 72411840.

The previous prime is 122621341. The next prime is 122621347. The reversal of 122621345 is 543126221.

It is a happy number.

It is not a de Polignac number, because 122621345 - 2² = 122621341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122621341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1067 + ... + 15696.

It is an arithmetic number, because the mean of its divisors is an integer number (6035040).

Almost surely, 2^122621345 is an apocalyptic number.

It is an amenable number.

122621345 is a deficient number, since it is larger than the sum of its proper divisors (70499935).

122621345 is a wasteful number, since it uses less digits than its factorization.

122621345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16805.

The product of its digits is 2880, while the sum is 26.

The square root of 122621345 is about 11073.4522620545. The cubic root of 122621345 is about 496.8081272554.

Adding to 122621345 its reverse (543126221), we get a palindrome (665747566).

The spelling of 122621345 in words is "one hundred twenty-two million, six hundred twenty-one thousand, three hundred forty-five".