20010012019 has 4 divisors (see below), whose sum is σ = 20153969080. Its totient is φ = 19866054960.

The previous prime is 20010012017. The next prime is 20010012023. The reversal of 20010012019 is 91021001002.

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

It is a cyclic number.

It is not a de Polignac number, because 20010012019 - 2¹ = 20010012017 is a prime.

It is a super-2 number, since 2×20010012019² (a number of 21 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 = 20010011993 and 20010012011.

It is not an unprimeable number, because it can be changed into a prime (20010012017) 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, 71978322 + ... + 71978599.

It is an arithmetic number, because the mean of its divisors is an integer number (5038492270).

Almost surely, 2^20010012019 is an apocalyptic number.

20010012019 is a deficient number, since it is larger than the sum of its proper divisors (143957061).

20010012019 is a wasteful number, since it uses less digits than its factorization.

20010012019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143957060.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 20010012019 in words is "twenty billion, ten million, twelve thousand, nineteen".