210122210020 has 12 divisors (see below), whose sum is σ = 441256641084. Its totient is φ = 84048884000.

The previous prime is 210122210009. The next prime is 210122210033. The reversal of 210122210020 is 20012221012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53546885604 + 156575324416 = 231402^2 + 395696^2 .

It is a super-3 number, since 3×210122210020³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5253055231 + ... + 5253055270.

It is an arithmetic number, because the mean of its divisors is an integer number (36771386757).

Almost surely, 2^210122210020 is an apocalyptic number.

210122210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210122210020 is an abundant number, since it is smaller than the sum of its proper divisors (231134431064).

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

210122210020 is a wasteful number, since it uses less digits than its factorization.

210122210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10506110510 (or 10506110508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210122210020 its reverse (20012221012), we get a palindrome (230134431032).

The spelling of 210122210020 in words is "two hundred ten billion, one hundred twenty-two million, two hundred ten thousand, twenty".