210122012220 has 24 divisors (see below), whose sum is σ = 588341634384. Its totient is φ = 56032536576.

The previous prime is 210122012179. The next prime is 210122012323. The reversal of 210122012220 is 22210221012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 210122012220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1751016709 + ... + 1751016828.

It is an arithmetic number, because the mean of its divisors is an integer number (24514234766).

Almost surely, 2^210122012220 is an apocalyptic number.

210122012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210122012220 is an abundant number, since it is smaller than the sum of its proper divisors (378219622164).

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

210122012220 is a wasteful number, since it uses less digits than its factorization.

210122012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502033549 (or 3502033547 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210122012220 its reverse (22210221012), we get a palindrome (232332233232).

The spelling of 210122012220 in words is "two hundred ten billion, one hundred twenty-two million, twelve thousand, two hundred twenty".