21011020302000 has 80 divisors (see below), whose sum is σ = 67739529472992. Its totient is φ = 5602938745600.

The previous prime is 21011020301977. The next prime is 21011020302073. The reversal of 21011020302000 is 20302011012.

It is a tau number, because it is divible by the number of its divisors (80).

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

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, 1750912359 + ... + 1750924358.

Almost surely, 2^{21011020302000} is an apocalyptic number.

21011020302000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21011020302000 is an abundant number, since it is smaller than the sum of its proper divisors (46728509170992).

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

21011020302000 is a wasteful number, since it uses less digits than its factorization.

21011020302000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501836743 (or 3501836727 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21011020302000 its reverse (20302011012), we get a palindrome (21031322313012).

The spelling of 21011020302000 in words is "twenty-one trillion, eleven billion, twenty million, three hundred two thousand".