1361222056 has 8 divisors (see below), whose sum is σ = 2552291370. Its totient is φ = 680611024.

The previous prime is 1361222033. The next prime is 1361222063. The reversal of 1361222056 is 6502221631.

It can be written as a sum of positive squares in only one way, i.e., 1168956100 + 192265956 = 34190^2 + 13866^2 .

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, 85076371 + ... + 85076386.

Almost surely, 2^1361222056 is an apocalyptic number.

It is an amenable number.

1361222056 is a deficient number, since it is larger than the sum of its proper divisors (1191069314).

1361222056 is a wasteful number, since it uses less digits than its factorization.

1361222056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170152763 (or 170152759 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1361222056 is about 36894.7429317511. The cubic root of 1361222056 is about 1108.2634036017.

Adding to 1361222056 its reverse (6502221631), we get a palindrome (7863443687).

The spelling of 1361222056 in words is "one billion, three hundred sixty-one million, two hundred twenty-two thousand, fifty-six".