102100021112087 has 2 divisors, whose sum is σ = 102100021112088. Its totient is φ = 102100021112086.

The previous prime is 102100021112081. The next prime is 102100021112113. The reversal of 102100021112087 is 780211120001201.

It is a happy number.

It is an a-pointer prime, because the next prime (102100021112113) can be obtained adding 102100021112087 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102100021112087 - 2²² = 102100016917783 is a prime.

It is a super-2 number, since 2×102100021112087² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102100021112081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050010556043 + 51050010556044.

It is an arithmetic number, because the mean of its divisors is an integer number (51050010556044).

Almost surely, 2^{102100021112087} is an apocalyptic number.

102100021112087 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100021112087 is an equidigital number, since it uses as much as digits as its factorization.

102100021112087 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 26.

Adding to 102100021112087 its reverse (780211120001201), we get a palindrome (882311141113288).

The spelling of 102100021112087 in words is "one hundred two trillion, one hundred billion, twenty-one million, one hundred twelve thousand, eighty-seven".