1157221017205 has 16 divisors (see below), whose sum is σ = 1514952802944. Its totient is φ = 841590124480.

The previous prime is 1157221017181. The next prime is 1157221017247. The reversal of 1157221017205 is 5027101227511.

It is not a de Polignac number, because 1157221017205 - 2³⁷ = 1019782063733 is a prime.

It is a Duffinian number.

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, 1652799 + ... + 2246371.

It is an arithmetic number, because the mean of its divisors is an integer number (94684550184).

Almost surely, 2^{1157221017205} is an apocalyptic number.

It is an amenable number.

1157221017205 is a deficient number, since it is larger than the sum of its proper divisors (357731785739).

1157221017205 is a wasteful number, since it uses less digits than its factorization.

1157221017205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629036.

The product of its (nonzero) digits is 9800, while the sum is 34.

The spelling of 1157221017205 in words is "one trillion, one hundred fifty-seven billion, two hundred twenty-one million, seventeen thousand, two hundred five".