122216456 has 8 divisors (see below), whose sum is σ = 229155870. Its totient is φ = 61108224.

The previous prime is 122216443. The next prime is 122216461. The reversal of 122216456 is 654612221.

It can be written as a sum of positive squares in only one way, i.e., 80820100 + 41396356 = 8990^2 + 6434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7638521 + ... + 7638536.

Almost surely, 2^122216456 is an apocalyptic number.

It is an amenable number.

122216456 is a deficient number, since it is larger than the sum of its proper divisors (106939414).

122216456 is a wasteful number, since it uses less digits than its factorization.

122216456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15277063 (or 15277059 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 122216456 is about 11055.1551775631. The cubic root of 122216456 is about 496.2607131798.

Adding to 122216456 its reverse (654612221), we get a palindrome (776828677).

The spelling of 122216456 in words is "one hundred twenty-two million, two hundred sixteen thousand, four hundred fifty-six".