21121101020983 has 2 divisors, whose sum is σ = 21121101020984. Its totient is φ = 21121101020982.

The previous prime is 21121101020869. The next prime is 21121101021043. The reversal of 21121101020983 is 38902010112112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21121101020983 - 2³³ = 21112511086391 is a prime.

It is a super-2 number, since 2×21121101020983² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21121101020783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560550510491 + 10560550510492.

It is an arithmetic number, because the mean of its divisors is an integer number (10560550510492).

Almost surely, 2^{21121101020983} is an apocalyptic number.

21121101020983 is a deficient number, since it is larger than the sum of its proper divisors (1).

21121101020983 is an equidigital number, since it uses as much as digits as its factorization.

21121101020983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 21121101020983 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred one million, twenty thousand, nine hundred eighty-three".