20000122021009 has 16 divisors (see below), whose sum is σ = 21756431499264. Its totient is φ = 18275009400000.

The previous prime is 20000122020979. The next prime is 20000122021013. The reversal of 20000122021009 is 90012022100002.

It is a cyclic number.

It is not a de Polignac number, because 20000122021009 - 2⁹ = 20000122020497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20000122021079) 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, 4634992 + ... + 7841134.

It is an arithmetic number, because the mean of its divisors is an integer number (1359776968704).

Almost surely, 2^{20000122021009} is an apocalyptic number.

It is an amenable number.

20000122021009 is a deficient number, since it is larger than the sum of its proper divisors (1756309478255).

20000122021009 is a wasteful number, since it uses less digits than its factorization.

20000122021009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211008.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20000122021009 in words is "twenty trillion, one hundred twenty-two million, twenty-one thousand, nine".