122721446 has 16 divisors (see below), whose sum is σ = 195078240. Its totient is φ = 57798720.

The previous prime is 122721413. The next prime is 122721457. The reversal of 122721446 is 644127221.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 23426 + ... + 28181.

It is an arithmetic number, because the mean of its divisors is an integer number (12192390).

Almost surely, 2^122721446 is an apocalyptic number.

122721446 is a deficient number, since it is larger than the sum of its proper divisors (72356794).

122721446 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 8 representation: 122721446 = (724112246)₈.

122721446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51679.

The product of its digits is 5376, while the sum is 29.

The square root of 122721446 is about 11077.9712041511. The cubic root of 122721446 is about 496.9432789942.

Adding to 122721446 its reverse (644127221), we get a palindrome (766848667).

The spelling of 122721446 in words is "one hundred twenty-two million, seven hundred twenty-one thousand, four hundred forty-six".