20021102020999 has 8 divisors (see below), whose sum is σ = 20096981992080. Its totient is φ = 19945358649216.

The previous prime is 20021102020991. The next prime is 20021102021003. The reversal of 20021102020999 is 99902020112002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20021102020999 - 2³ = 20021102020991 is a prime.

It is a super-2 number, since 2×20021102020999² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021102020991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33856129 + ... + 34442410.

It is an arithmetic number, because the mean of its divisors is an integer number (2512122749010).

Almost surely, 2^{20021102020999} is an apocalyptic number.

20021102020999 is a deficient number, since it is larger than the sum of its proper divisors (75879971081).

20021102020999 is an equidigital number, since it uses as much as digits as its factorization.

20021102020999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68299649.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 20021102020999 in words is "twenty trillion, twenty-one billion, one hundred two million, twenty thousand, nine hundred ninety-nine".