1157067221 has 8 divisors (see below), whose sum is σ = 1179463680. Its totient is φ = 1134691792.

The previous prime is 1157067217. The next prime is 1157067239. The reversal of 1157067221 is 1227607511.

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 1157067221 - 2² = 1157067217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157067721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148796 + ... + 156378.

It is an arithmetic number, because the mean of its divisors is an integer number (147432960).

Almost surely, 2^1157067221 is an apocalyptic number.

It is an amenable number.

1157067221 is a deficient number, since it is larger than the sum of its proper divisors (22396459).

1157067221 is an equidigital number, since it uses as much as digits as its factorization.

1157067221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 1157067221 is about 34015.6908058619. The cubic root of 1157067221 is about 1049.8313322422.

The spelling of 1157067221 in words is "one billion, one hundred fifty-seven million, sixty-seven thousand, two hundred twenty-one".