20110020021999 has 24 divisors (see below), whose sum is σ = 30576985311600. Its totient is φ = 12700921271040.

The previous prime is 20110020021991. The next prime is 20110020022003. The reversal of 20110020021999 is 99912002001102.

It is not a de Polignac number, because 20110020021999 - 2³ = 20110020021991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110020021991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15619117 + ... + 16857545.

It is an arithmetic number, because the mean of its divisors is an integer number (1274041054650).

Almost surely, 2^{20110020021999} is an apocalyptic number.

20110020021999 is a deficient number, since it is larger than the sum of its proper divisors (10466965289601).

20110020021999 is a wasteful number, since it uses less digits than its factorization.

20110020021999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333415 (or 1333412 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 20110020021999 in words is "twenty trillion, one hundred ten billion, twenty million, twenty-one thousand, nine hundred ninety-nine".