210022221200020 has 36 divisors (see below), whose sum is σ = 461056343084820. Its totient is φ = 80356328107264.

The previous prime is 210022221199919. The next prime is 210022221200047. The reversal of 210022221200020 is 20002122220012.

It can be written as a sum of positive squares in 2 ways, for example, as 132023684904336 + 77998536295684 = 11490156^2 + 8831678^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210022221199967 and 210022221200003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9925425205 + ... + 9925446364.

It is an arithmetic number, because the mean of its divisors is an integer number (12807120641245).

Almost surely, 2^{210022221200020} is an apocalyptic number.

210022221200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210022221200020 is an abundant number, since it is smaller than the sum of its proper divisors (251034121884800).

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

210022221200020 is a wasteful number, since it uses less digits than its factorization.

210022221200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19850871624 (or 19850871599 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 210022221200020 its reverse (20002122220012), we get a palindrome (230024343420032).

The spelling of 210022221200020 in words is "two hundred ten trillion, twenty-two billion, two hundred twenty-one million, two hundred thousand, twenty".