1361222057 has 8 divisors (see below), whose sum is σ = 1466217984. Its totient is φ = 1256267088.

The previous prime is 1361222033. The next prime is 1361222063. The reversal of 1361222057 is 7502221631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1361222057 - 2¹² = 1361217961 is a prime.

It is a super-2 number, since 2×1361222057² = 3705850976926622498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361222257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126968 + ... + 137270.

It is an arithmetic number, because the mean of its divisors is an integer number (183277248).

Almost surely, 2^1361222057 is an apocalyptic number.

It is an amenable number.

1361222057 is a deficient number, since it is larger than the sum of its proper divisors (104995927).

1361222057 is a wasteful number, since it uses less digits than its factorization.

1361222057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20479.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1361222057 is about 36894.7429453032. The cubic root of 1361222057 is about 1108.2634038731.

Adding to 1361222057 its reverse (7502221631), we get a palindrome (8863443688).

The spelling of 1361222057 in words is "one billion, three hundred sixty-one million, two hundred twenty-two thousand, fifty-seven".