122220404 has 6 divisors (see below), whose sum is σ = 213885714. Its totient is φ = 61110200.

The previous prime is 122220401. The next prime is 122220409. The reversal of 122220404 is 404022221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 121660900 + 559504 = 11030^2 + 748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15277547 + ... + 15277554.

It is an arithmetic number, because the mean of its divisors is an integer number (35647619).

Almost surely, 2^122220404 is an apocalyptic number.

It is an amenable number.

122220404 is a deficient number, since it is larger than the sum of its proper divisors (91665310).

122220404 is a wasteful number, since it uses less digits than its factorization.

122220404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555105 (or 30555103 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 122220404 is about 11055.3337353515. Note that the first 3 decimals coincide. The cubic root of 122220404 is about 496.2660567488.

Adding to 122220404 its reverse (404022221), we get a palindrome (526242625).

The spelling of 122220404 in words is "one hundred twenty-two million, two hundred twenty thousand, four hundred four".