21020020022202 has 32 divisors (see below), whose sum is σ = 42070047916032. Its totient is φ = 7001672423664.

The previous prime is 21020020022171. The next prime is 21020020022251. The reversal of 21020020022202 is 20222002002012.

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, 409378143 + ... + 409429485.

It is an arithmetic number, because the mean of its divisors is an integer number (1314688997376).

Almost surely, 2^{21020020022202} is an apocalyptic number.

21020020022202 is an abundant number, since it is smaller than the sum of its proper divisors (21050027893830).

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

21020020022202 is a wasteful number, since it uses less digits than its factorization.

21020020022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98722.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 21020020022202 its reverse (20222002002012), we get a palindrome (41242022024214).

The spelling of 21020020022202 in words is "twenty-one trillion, twenty billion, twenty million, twenty-two thousand, two hundred two".