122121404 has 24 divisors (see below), whose sum is σ = 226654848. Its totient is φ = 57374720.

The previous prime is 122121383. The next prime is 122121413. The reversal of 122121404 is 404121221.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

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, 57644 + ... + 59724.

It is an arithmetic number, because the mean of its divisors is an integer number (9443952).

Almost surely, 2^122121404 is an apocalyptic number.

It is an amenable number.

122121404 is a deficient number, since it is larger than the sum of its proper divisors (104533444).

122121404 is a wasteful number, since it uses less digits than its factorization.

122121404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965 (or 2963 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 122121404 is about 11050.8553515101. The cubic root of 122121404 is about 496.1320267249.

Adding to 122121404 its reverse (404121221), we get a palindrome (526242625).

The spelling of 122121404 in words is "one hundred twenty-two million, one hundred twenty-one thousand, four hundred four".