101012201291 has 2 divisors, whose sum is σ = 101012201292. Its totient is φ = 101012201290.

The previous prime is 101012201221. The next prime is 101012201309. The reversal of 101012201291 is 192102210101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101012201291 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (101012201221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50506100645 + 50506100646.

It is an arithmetic number, because the mean of its divisors is an integer number (50506100646).

Almost surely, 2^101012201291 is an apocalyptic number.

101012201291 is a deficient number, since it is larger than the sum of its proper divisors (1).

101012201291 is an equidigital number, since it uses as much as digits as its factorization.

101012201291 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 20.

Adding to 101012201291 its reverse (192102210101), we get a palindrome (293114411392).

The spelling of 101012201291 in words is "one hundred one billion, twelve million, two hundred one thousand, two hundred ninety-one".