10211112991 has 2 divisors, whose sum is σ = 10211112992. Its totient is φ = 10211112990.

The previous prime is 10211112983. The next prime is 10211113027. The reversal of 10211112991 is 19921111201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10211112991 - 2³ = 10211112983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211112091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105556495 + 5105556496.

It is an arithmetic number, because the mean of its divisors is an integer number (5105556496).

Almost surely, 2^10211112991 is an apocalyptic number.

10211112991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211112991 is an equidigital number, since it uses as much as digits as its factorization.

10211112991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 10211112991 in words is "ten billion, two hundred eleven million, one hundred twelve thousand, nine hundred ninety-one".