1222481776388 has 6 divisors (see below), whose sum is σ = 2139343108686. Its totient is φ = 611240888192.

The previous prime is 1222481776387. The next prime is 1222481776463. The reversal of 1222481776388 is 8836771842221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1177099143364 + 45382633024 = 1084942^2 + 213032^2 .

It is not an unprimeable number, because it can be changed into a prime (1222481776381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152810222045 + ... + 152810222052.

It is an arithmetic number, because the mean of its divisors is an integer number (356557184781).

Almost surely, 2^{1222481776388} is an apocalyptic number.

It is an amenable number.

1222481776388 is a deficient number, since it is larger than the sum of its proper divisors (916861332298).

1222481776388 is a wasteful number, since it uses less digits than its factorization.

1222481776388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305620444101 (or 305620444099 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 59.

The spelling of 1222481776388 in words is "one trillion, two hundred twenty-two billion, four hundred eighty-one million, seven hundred seventy-six thousand, three hundred eighty-eight".