21202000210020 has 96 divisors (see below), whose sum is σ = 67864023714816. Its totient is φ = 4844912688000.

The previous prime is 21202000210003. The next prime is 21202000210129. The reversal of 21202000210020 is 2001200020212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21202000209978 and 21202000210005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4936846 + ... + 8171685.

It is an arithmetic number, because the mean of its divisors is an integer number (706916913696).

Almost surely, 2^{21202000210020} is an apocalyptic number.

21202000210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202000210020 is an abundant number, since it is smaller than the sum of its proper divisors (46662023504796).

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

21202000210020 is a wasteful number, since it uses less digits than its factorization.

21202000210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13112401 (or 13112399 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21202000210020 its reverse (2001200020212), we get a palindrome (23203200230232).

The spelling of 21202000210020 in words is "twenty-one trillion, two hundred two billion, two hundred ten thousand, twenty".