10121020087 has 2 divisors, whose sum is σ = 10121020088. Its totient is φ = 10121020086.

The previous prime is 10121020081. The next prime is 10121020127. The reversal of 10121020087 is 78002012101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121020087 - 2²³ = 10112631479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121020081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060510043 + 5060510044.

It is an arithmetic number, because the mean of its divisors is an integer number (5060510044).

Almost surely, 2^10121020087 is an apocalyptic number.

10121020087 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121020087 is an equidigital number, since it uses as much as digits as its factorization.

10121020087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 10121020087 its reverse (78002012101), we get a palindrome (88123032188).

The spelling of 10121020087 in words is "ten billion, one hundred twenty-one million, twenty thousand, eighty-seven".