1163010021 has 4 divisors (see below), whose sum is σ = 1550680032. Its totient is φ = 775340012.

The previous prime is 1163009989. The next prime is 1163010029. The reversal of 1163010021 is 1200103611.

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 a cyclic number.

It is not a de Polignac number, because 1163010021 - 2⁵ = 1163009989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163010029) 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, 193835001 + ... + 193835006.

It is an arithmetic number, because the mean of its divisors is an integer number (387670008).

Almost surely, 2^1163010021 is an apocalyptic number.

It is an amenable number.

1163010021 is a deficient number, since it is larger than the sum of its proper divisors (387670011).

1163010021 is an equidigital number, since it uses as much as digits as its factorization.

1163010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387670010.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1163010021 is about 34102.9327331243. The cubic root of 1163010021 is about 1051.6256062066.

Adding to 1163010021 its reverse (1200103611), we get a palindrome (2363113632).

The spelling of 1163010021 in words is "one billion, one hundred sixty-three million, ten thousand, twenty-one".