102021119 has 4 divisors (see below), whose sum is σ = 102409296. Its totient is φ = 101632944.

The previous prime is 102021113. The next prime is 102021133. The reversal of 102021119 is 911120201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102021119 is a prime.

It is a super-2 number, since 2×102021119² = 20816617444024322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102021097 and 102021106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021113) 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, 193694 + ... + 194219.

It is an arithmetic number, because the mean of its divisors is an integer number (25602324).

Almost surely, 2^102021119 is an apocalyptic number.

102021119 is a deficient number, since it is larger than the sum of its proper divisors (388177).

102021119 is an equidigital number, since it uses as much as digits as its factorization.

102021119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388176.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 102021119 is about 10100.5504305459. The cubic root of 102021119 is about 467.2651173130.

The spelling of 102021119 in words is "one hundred two million, twenty-one thousand, one hundred nineteen".