20021101110999 has 96 divisors (see below), whose sum is σ = 30232674576000. Its totient is φ = 12751933565952.

The previous prime is 20021101110991. The next prime is 20021101111001. The reversal of 20021101110999 is 99901110112002.

It is not a de Polignac number, because 20021101110999 - 2³ = 20021101110991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021101110991) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7829917029 + ... + 7829919585.

It is an arithmetic number, because the mean of its divisors is an integer number (314923693500).

Almost surely, 2^{20021101110999} is an apocalyptic number.

20021101110999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20021101110999 is a deficient number, since it is larger than the sum of its proper divisors (10211573465001).

20021101110999 is a wasteful number, since it uses less digits than its factorization.

20021101110999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 20021101110999 in words is "twenty trillion, twenty-one billion, one hundred one million, one hundred ten thousand, nine hundred ninety-nine".