102121021313219 has 4 divisors (see below), whose sum is σ = 103057911417120. Its totient is φ = 101184131209320.

The previous prime is 102121021313203. The next prime is 102121021313273. The reversal of 102121021313219 is 912313120121201.

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 102121021313219 - 2⁴ = 102121021313203 is a prime.

It is a super-2 number, since 2×102121021313219² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102121021313191 and 102121021313200.

It is not an unprimeable number, because it can be changed into a prime (102121021310219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468445051787 + ... + 468445052004.

It is an arithmetic number, because the mean of its divisors is an integer number (25764477854280).

Almost surely, 2^{102121021313219} is an apocalyptic number.

102121021313219 is a deficient number, since it is larger than the sum of its proper divisors (936890103901).

102121021313219 is an equidigital number, since it uses as much as digits as its factorization.

102121021313219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936890103900.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 102121021313219 in words is "one hundred two trillion, one hundred twenty-one billion, twenty-one million, three hundred thirteen thousand, two hundred nineteen".