1021110157 has 2 divisors, whose sum is σ = 1021110158. Its totient is φ = 1021110156.

The previous prime is 1021110119. The next prime is 1021110163. The reversal of 1021110157 is 7510111201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 911677636 + 109432521 = 30194^2 + 10461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021110157 - 2⁷ = 1021110029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021110107) 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 as a sum of consecutive naturals, namely, 510555078 + 510555079.

It is an arithmetic number, because the mean of its divisors is an integer number (510555079).

Almost surely, 2^1021110157 is an apocalyptic number.

It is an amenable number.

1021110157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021110157 is an equidigital number, since it uses as much as digits as its factorization.

1021110157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 19.

The square root of 1021110157 is about 31954.8143008217. The cubic root of 1021110157 is about 1006.9877762477.

Adding to 1021110157 its reverse (7510111201), we get a palindrome (8531221358).

The spelling of 1021110157 in words is "one billion, twenty-one million, one hundred ten thousand, one hundred fifty-seven".