21010220211000 has 64 divisors (see below), whose sum is σ = 65551887067680. Its totient is φ = 5602725388800.

The previous prime is 21010220210989. The next prime is 21010220211037. The reversal of 21010220211000 is 11202201012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3501700369 + ... + 3501706368.

Almost surely, 2^{21010220211000} is an apocalyptic number.

21010220211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010220211000 is an abundant number, since it is smaller than the sum of its proper divisors (44541666856680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010220211000 is a wasteful number, since it uses less digits than its factorization.

21010220211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7003406761 (or 7003406747 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21010220211000 its reverse (11202201012), we get a palindrome (21021422412012).

The spelling of 21010220211000 in words is "twenty-one trillion, ten billion, two hundred twenty million, two hundred eleven thousand".