20021102010983 has 4 divisors (see below), whose sum is σ = 21198813894000. Its totient is φ = 18843390127968.

The previous prime is 20021102010953. The next prime is 20021102010989. The reversal of 20021102010983 is 38901020112002.

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 20021102010983 - 2³⁴ = 20003922141799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021102010989) 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, 588855941483 + ... + 588855941516.

It is an arithmetic number, because the mean of its divisors is an integer number (5299703473500).

Almost surely, 2^{20021102010983} is an apocalyptic number.

20021102010983 is a deficient number, since it is larger than the sum of its proper divisors (1177711883017).

20021102010983 is a wasteful number, since it uses less digits than its factorization.

20021102010983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177711883016.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 20021102010983 its reverse (38901020112002), we get a palindrome (58922122122985).

The spelling of 20021102010983 in words is "twenty trillion, twenty-one billion, one hundred two million, ten thousand, nine hundred eighty-three".