101201021191 has 2 divisors, whose sum is σ = 101201021192. Its totient is φ = 101201021190.

The previous prime is 101201021183. The next prime is 101201021197. The reversal of 101201021191 is 191120102101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101201021191 - 2³ = 101201021183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101201021197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50600510595 + 50600510596.

It is an arithmetic number, because the mean of its divisors is an integer number (50600510596).

Almost surely, 2^101201021191 is an apocalyptic number.

101201021191 is a deficient number, since it is larger than the sum of its proper divisors (1).

101201021191 is an equidigital number, since it uses as much as digits as its factorization.

101201021191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 101201021191 its reverse (191120102101), we get a palindrome (292321123292).

The spelling of 101201021191 in words is "one hundred one billion, two hundred one million, twenty-one thousand, one hundred ninety-one".