102110121021019 has 4 divisors (see below), whose sum is σ = 104484774998296. Its totient is φ = 99735467043744.

The previous prime is 102110121021011. The next prime is 102110121021043. The reversal of 102110121021019 is 910120121011201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102110121021019 - 2³ = 102110121021011 is a prime.

It is a super-2 number, since 2×102110121021019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102110121021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187326988574 + ... + 1187326988659.

It is an arithmetic number, because the mean of its divisors is an integer number (26121193749574).

Almost surely, 2^{102110121021019} is an apocalyptic number.

102110121021019 is a deficient number, since it is larger than the sum of its proper divisors (2374653977277).

102110121021019 is an equidigital number, since it uses as much as digits as its factorization.

102110121021019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374653977276.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 102110121021019 in words is "one hundred two trillion, one hundred ten billion, one hundred twenty-one million, twenty-one thousand, nineteen".