101102020291 has 2 divisors, whose sum is σ = 101102020292. Its totient is φ = 101102020290.

The previous prime is 101102020249. The next prime is 101102020303. The reversal of 101102020291 is 192020201101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101102020291 - 2⁷ = 101102020163 is a prime.

It is not a weakly prime, because it can be changed into another prime (101102020891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50551010145 + 50551010146.

It is an arithmetic number, because the mean of its divisors is an integer number (50551010146).

Almost surely, 2^101102020291 is an apocalyptic number.

101102020291 is a deficient number, since it is larger than the sum of its proper divisors (1).

101102020291 is an equidigital number, since it uses as much as digits as its factorization.

101102020291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 101102020291 its reverse (192020201101), we get a palindrome (293122221392).

The spelling of 101102020291 in words is "one hundred one billion, one hundred two million, twenty thousand, two hundred ninety-one".