20021012002019 has 64 divisors (see below), whose sum is σ = 24144184221696. Its totient is φ = 16246188693504.

The previous prime is 20021012001973. The next prime is 20021012002021. The reversal of 20021012002019 is 91020021012002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20021012002019 is a prime.

It is a super-2 number, since 2×20021012002019² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20021012002819) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 574523054 + ... + 574557900.

It is an arithmetic number, because the mean of its divisors is an integer number (377252878464).

Almost surely, 2^{20021012002019} is an apocalyptic number.

20021012002019 is a deficient number, since it is larger than the sum of its proper divisors (4123172219677).

20021012002019 is a wasteful number, since it uses less digits than its factorization.

20021012002019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35364.

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

The spelling of 20021012002019 in words is "twenty trillion, twenty-one billion, twelve million, two thousand, nineteen".