1057501152221 has 4 divisors (see below), whose sum is σ = 1057532253600. Its totient is φ = 1057470050844.

The previous prime is 1057501152209. The next prime is 1057501152233. The reversal of 1057501152221 is 1222511057501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1057501152209) and next prime (1057501152233).

It is a cyclic number.

It is not a de Polignac number, because 1057501152221 - 2⁶ = 1057501152157 is a prime.

It is a super-2 number, since 2×1057501152221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057501152821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15499631 + ... + 15567708.

It is an arithmetic number, because the mean of its divisors is an integer number (264383063400).

Almost surely, 2^{1057501152221} is an apocalyptic number.

It is an amenable number.

1057501152221 is a deficient number, since it is larger than the sum of its proper divisors (31101379).

1057501152221 is an equidigital number, since it uses as much as digits as its factorization.

1057501152221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31101378.

The product of its (nonzero) digits is 7000, while the sum is 32.

The spelling of 1057501152221 in words is "one trillion, fifty-seven billion, five hundred one million, one hundred fifty-two thousand, two hundred twenty-one".