21322020020202 has 48 divisors (see below), whose sum is σ = 50403042488448. Its totient is φ = 6460507851840.

The previous prime is 21322020020129. The next prime is 21322020020207. The reversal of 21322020020202 is 20202002022312.

21322020020202 is a `hidden beast` number, since 21 + 3 + 220 + 200 + 20 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21322020020207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4112523 + ... + 7717310.

It is an arithmetic number, because the mean of its divisors is an integer number (1050063385176).

Almost surely, 2^{21322020020202} is an apocalyptic number.

21322020020202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21322020020202 is an abundant number, since it is smaller than the sum of its proper divisors (29081022468246).

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

21322020020202 is a wasteful number, since it uses less digits than its factorization.

21322020020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11838955 (or 11838952 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21322020020202 its reverse (20202002022312), we get a palindrome (41524022042514).

It can be divided in two parts, 21 and 322020020202, that added together give a palindrome (322020020223).

The spelling of 21322020020202 in words is "twenty-one trillion, three hundred twenty-two billion, twenty million, twenty thousand, two hundred two".