202102110019 has 4 divisors (see below), whose sum is σ = 203693465344. Its totient is φ = 200510754696.

The previous prime is 202102109977. The next prime is 202102110061. The reversal of 202102110019 is 910011201202.

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: 910011201202 = 2 ⋅455005600601.

It is an interprime number because it is at equal distance from previous prime (202102109977) and next prime (202102110061).

It is a cyclic number.

It is not a de Polignac number, because 202102110019 - 2²⁵ = 202068555587 is a prime.

It is a super-2 number, since 2×202102110019² (a number of 23 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 = 202102109978 and 202102110005.

It is not an unprimeable number, because it can be changed into a prime (202102116019) 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, 795677472 + ... + 795677725.

It is an arithmetic number, because the mean of its divisors is an integer number (50923366336).

Almost surely, 2^202102110019 is an apocalyptic number.

202102110019 is a deficient number, since it is larger than the sum of its proper divisors (1591355325).

202102110019 is a wasteful number, since it uses less digits than its factorization.

202102110019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591355324.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 202102110019 in words is "two hundred two billion, one hundred two million, one hundred ten thousand, nineteen".