210122210120020 has 96 divisors (see below), whose sum is σ = 509797155442176. Its totient is φ = 71897915443200.

The previous prime is 210122210119993. The next prime is 210122210120101. The reversal of 210122210120020 is 20021012221012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 210122210119976 and 210122210120003.

It is a congruent number.

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, 11203509 + ... + 23361571.

It is an arithmetic number, because the mean of its divisors is an integer number (5310387035856).

Almost surely, 2^{210122210120020} is an apocalyptic number.

210122210120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210122210120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254898577721088).

210122210120020 is an abundant number, since it is smaller than the sum of its proper divisors (299674945322156).

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

210122210120020 is a wasteful number, since it uses less digits than its factorization.

210122210120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12162721 (or 12162719 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210122210120020 its reverse (20021012221012), we get a palindrome (230143222341032).

The spelling of 210122210120020 in words is "two hundred ten trillion, one hundred twenty-two billion, two hundred ten million, one hundred twenty thousand, twenty".