61222612 has 18 divisors (see below), whose sum is σ = 117765914. Its totient is φ = 27828240.

The previous prime is 61222607. The next prime is 61222631. The reversal of 61222612 is 21622216.

It can be written as a sum of positive squares in only one way, i.e., 58277956 + 2944656 = 7634^2 + 1716^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62763 + ... + 63730.

Almost surely, 2^61222612 is an apocalyptic number.

It is an amenable number.

61222612 is a deficient number, since it is larger than the sum of its proper divisors (56543302).

61222612 is a wasteful number, since it uses less digits than its factorization.

61222612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126519 (or 126506 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 61222612 is about 7824.4879704681. The cubic root of 61222612 is about 394.1279957255.

Adding to 61222612 its reverse (21622216), we get a palindrome (82844828).

The spelling of 61222612 in words is "sixty-one million, two hundred twenty-two thousand, six hundred twelve".