20021110100019 has 16 divisors (see below), whose sum is σ = 33898175831040. Its totient is φ = 11440634342760.

The previous prime is 20021110100011. The next prime is 20021110100039. The reversal of 20021110100019 is 91000101112002.

It is a happy number.

It is not a de Polignac number, because 20021110100019 - 2³ = 20021110100011 is a prime.

It is a super-2 number, since 2×20021110100019² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021110099974 and 20021110100010.

It is not an unprimeable number, because it can be changed into a prime (20021110100011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52965899547 + ... + 52965899924.

It is an arithmetic number, because the mean of its divisors is an integer number (2118635989440).

Almost surely, 2^{20021110100019} is an apocalyptic number.

20021110100019 is a deficient number, since it is larger than the sum of its proper divisors (13877065731021).

20021110100019 is a wasteful number, since it uses less digits than its factorization.

20021110100019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105931799487 (or 105931799481 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 20021110100019 in words is "twenty trillion, twenty-one billion, one hundred ten million, one hundred thousand, nineteen".