11022121087 has 2 divisors, whose sum is σ = 11022121088. Its totient is φ = 11022121086.

The previous prime is 11022121079. The next prime is 11022121129. The reversal of 11022121087 is 78012122011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11022121087 - 2³ = 11022121079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11022121987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511060543 + 5511060544.

It is an arithmetic number, because the mean of its divisors is an integer number (5511060544).

Almost surely, 2^11022121087 is an apocalyptic number.

11022121087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11022121087 is an equidigital number, since it uses as much as digits as its factorization.

11022121087 is an evil number, because the sum of its binary digits is even.

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

Adding to 11022121087 its reverse (78012122011), we get a palindrome (89034243098).

The spelling of 11022121087 in words is "eleven billion, twenty-two million, one hundred twenty-one thousand, eighty-seven".