102020012219 has 4 divisors (see below), whose sum is σ = 102399269040. Its totient is φ = 101640755400.

The previous prime is 102020012209. The next prime is 102020012239. The reversal of 102020012219 is 912210020201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912210020201 = 17 ⋅53659412953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102020012219 is a prime.

It is a super-2 number, since 2×102020012219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102020012219.

It is not an unprimeable number, because it can be changed into a prime (102020012209) 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, 189628007 + ... + 189628544.

It is an arithmetic number, because the mean of its divisors is an integer number (25599817260).

Almost surely, 2^102020012219 is an apocalyptic number.

102020012219 is a deficient number, since it is larger than the sum of its proper divisors (379256821).

102020012219 is an equidigital number, since it uses as much as digits as its factorization.

102020012219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379256820.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 102020012219 in words is "one hundred two billion, twenty million, twelve thousand, two hundred nineteen".