1021131151 has 4 divisors (see below), whose sum is σ = 1056342600. Its totient is φ = 985919704.

The previous prime is 1021131149. The next prime is 1021131157. The reversal of 1021131151 is 1511311201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021131151 - 2¹ = 1021131149 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 (1021131157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17605681 + ... + 17605738.

It is an arithmetic number, because the mean of its divisors is an integer number (264085650).

Almost surely, 2^1021131151 is an apocalyptic number.

1021131151 is a deficient number, since it is larger than the sum of its proper divisors (35211449).

1021131151 is an equidigital number, since it uses as much as digits as its factorization.

1021131151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35211448.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 1021131151 is about 31955.1427942358. The cubic root of 1021131151 is about 1006.9946774151.

Adding to 1021131151 its reverse (1511311201), we get a palindrome (2532442352).

The spelling of 1021131151 in words is "one billion, twenty-one million, one hundred thirty-one thousand, one hundred fifty-one".