11210121220087 has 2 divisors, whose sum is σ = 11210121220088. Its totient is φ = 11210121220086.

The previous prime is 11210121220073. The next prime is 11210121220127. The reversal of 11210121220087 is 78002212101211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11210121220087 - 2¹¹ = 11210121218039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11210121220787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605060610043 + 5605060610044.

It is an arithmetic number, because the mean of its divisors is an integer number (5605060610044).

Almost surely, 2^{11210121220087} is an apocalyptic number.

11210121220087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11210121220087 is an equidigital number, since it uses as much as digits as its factorization.

11210121220087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 28.

Adding to 11210121220087 its reverse (78002212101211), we get a palindrome (89212333321298).

The spelling of 11210121220087 in words is "eleven trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty thousand, eighty-seven".