1222277016 has 64 divisors (see below), whose sum is σ = 3255465600. Its totient is φ = 381086208.

The previous prime is 1222277009. The next prime is 1222277027. The reversal of 1222277016 is 6107722221.

It is a super-2 number, since 2×1222277016² = 2987922207683728512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57315 + ... + 75693.

It is an arithmetic number, because the mean of its divisors is an integer number (50866650).

Almost surely, 2^1222277016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222277016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627732800).

1222277016 is an abundant number, since it is smaller than the sum of its proper divisors (2033188584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222277016 is a wasteful number, since it uses less digits than its factorization.

1222277016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18568 (or 18564 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 1222277016 is about 34961.0785874807. The cubic root of 1222277016 is about 1069.1940872983.

Adding to 1222277016 its reverse (6107722221), we get a palindrome (7329999237).

The spelling of 1222277016 in words is "one billion, two hundred twenty-two million, two hundred seventy-seven thousand, sixteen".