211102101201091 has 4 divisors (see below), whose sum is σ = 212642992450872. Its totient is φ = 209561209951312.

The previous prime is 211102101201067. The next prime is 211102101201097. The reversal of 211102101201091 is 190102101201112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211102101201091 - 2²³ = 211102092812483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211102101201097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770445624685 + ... + 770445624958.

It is an arithmetic number, because the mean of its divisors is an integer number (53160748112718).

Almost surely, 2^{211102101201091} is an apocalyptic number.

211102101201091 is a deficient number, since it is larger than the sum of its proper divisors (1540891249781).

211102101201091 is a wasteful number, since it uses less digits than its factorization.

211102101201091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540891249780.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 211102101201091 in words is "two hundred eleven trillion, one hundred two billion, one hundred one million, two hundred one thousand, ninety-one".