122245221 has 32 divisors (see below), whose sum is σ = 197478400. Its totient is φ = 65707200.

The previous prime is 122245217. The next prime is 122245229. The reversal of 122245221 is 122542221.

It is not a de Polignac number, because 122245221 - 2² = 122245217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122245229) 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, 59235 + ... + 61263.

It is an arithmetic number, because the mean of its divisors is an integer number (6171200).

Almost surely, 2^122245221 is an apocalyptic number.

It is an amenable number.

122245221 is a deficient number, since it is larger than the sum of its proper divisors (75233179).

122245221 is a wasteful number, since it uses less digits than its factorization.

122245221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209.

The product of its digits is 640, while the sum is 21.

The square root of 122245221 is about 11056.4560777855. The cubic root of 122245221 is about 496.2996436154.

Adding to 122245221 its reverse (122542221), we get a palindrome (244787442).

The spelling of 122245221 in words is "one hundred twenty-two million, two hundred forty-five thousand, two hundred twenty-one".