21002210019999 has 72 divisors (see below), whose sum is σ = 32967031249152. Its totient is φ = 12878265816000.

The previous prime is 21002210019977. The next prime is 21002210020021. The reversal of 21002210019999 is 99991001220012.

It is an interprime number because it is at equal distance from previous prime (21002210019977) and next prime (21002210020021).

It is not a de Polignac number, because 21002210019999 - 2¹² = 21002210015903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002210019929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2218460464 + ... + 2218469930.

It is an arithmetic number, because the mean of its divisors is an integer number (457875434016).

Almost surely, 2^{21002210019999} is an apocalyptic number.

21002210019999 is a deficient number, since it is larger than the sum of its proper divisors (11964821229153).

21002210019999 is a wasteful number, since it uses less digits than its factorization.

21002210019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14557 (or 14541 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The spelling of 21002210019999 in words is "twenty-one trillion, two billion, two hundred ten million, nineteen thousand, nine hundred ninety-nine".