22101121087 has 2 divisors, whose sum is σ = 22101121088. Its totient is φ = 22101121086.

The previous prime is 22101121079. The next prime is 22101121117. The reversal of 22101121087 is 78012110122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22101121087 - 2³ = 22101121079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22101121027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050560543 + 11050560544.

It is an arithmetic number, because the mean of its divisors is an integer number (11050560544).

Almost surely, 2^22101121087 is an apocalyptic number.

22101121087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101121087 is an equidigital number, since it uses as much as digits as its factorization.

22101121087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

The spelling of 22101121087 in words is "twenty-two billion, one hundred one million, one hundred twenty-one thousand, eighty-seven".