1222040144 has 80 divisors (see below), whose sum is σ = 2647361808. Its totient is φ = 542785536.

The previous prime is 1222040111. The next prime is 1222040153. The reversal of 1222040144 is 4410402221.

It can be written as a sum of positive squares in 8 ways, for example, as 105678400 + 1116361744 = 10280^2 + 33412^2 .

It is a super-2 number, since 2×1222040144² = 2986764227095081472, 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, 745694 + ... + 747330.

Almost surely, 2^1222040144 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 1222040144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323680904).

1222040144 is an abundant number, since it is smaller than the sum of its proper divisors (1425321664).

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

1222040144 is a wasteful number, since it uses less digits than its factorization.

1222040144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1222040144 is about 34957.6907704156. The cubic root of 1222040144 is about 1069.1250144393.

Adding to 1222040144 its reverse (4410402221), we get a palindrome (5632442365).

The spelling of 1222040144 in words is "one billion, two hundred twenty-two million, forty thousand, one hundred forty-four".