1021113101 has 2 divisors, whose sum is σ = 1021113102. Its totient is φ = 1021113100.

The previous prime is 1021113089. The next prime is 1021113151. The reversal of 1021113101 is 1013111201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009587076 + 11526025 = 31774^2 + 3395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021113101 - 2¹⁰ = 1021112077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021113151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510556550 + 510556551.

It is an arithmetic number, because the mean of its divisors is an integer number (510556551).

Almost surely, 2^1021113101 is an apocalyptic number.

It is an amenable number.

1021113101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021113101 is an equidigital number, since it uses as much as digits as its factorization.

1021113101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1021113101 is about 31954.8603658348. The cubic root of 1021113101 is about 1006.9887440078.

Adding to 1021113101 its reverse (1013111201), we get a palindrome (2034224302).

The spelling of 1021113101 in words is "one billion, twenty-one million, one hundred thirteen thousand, one hundred one".