21020203133000 has 64 divisors (see below), whose sum is σ = 49195695669120. Its totient is φ = 8406641880000.

The previous prime is 21020203132991. The next prime is 21020203133011. The reversal of 21020203133000 is 33130202012.

It is a self number, because there is not a number n which added to its sum of digits gives 21020203133000.

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, 4054709 + ... + 7647291.

It is an arithmetic number, because the mean of its divisors is an integer number (768682744830).

Almost surely, 2^{21020203133000} is an apocalyptic number.

21020203133000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020203133000 is an abundant number, since it is smaller than the sum of its proper divisors (28175492536120).

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

21020203133000 is a wasteful number, since it uses less digits than its factorization.

21020203133000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598455 (or 3598441 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21020203133000 its reverse (33130202012), we get a palindrome (21053333335012).

The spelling of 21020203133000 in words is "twenty-one trillion, twenty billion, two hundred three million, one hundred thirty-three thousand".