210122112222020 has 24 divisors (see below), whose sum is σ = 441276322867800. Its totient is φ = 84045056850432.

The previous prime is 210122112222017. The next prime is 210122112222023. The reversal of 210122112222020 is 20222211221012.

It is an interprime number because it is at equal distance from previous prime (210122112222017) and next prime (210122112222023).

It can be written as a sum of positive squares in 4 ways, for example, as 69586161116224 + 140535951105796 = 8341832^2 + 11854786^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 210122112221983 and 210122112222001.

It is not an unprimeable number, because it can be changed into a prime (210122112222023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236297525 + ... + 237185084.

It is an arithmetic number, because the mean of its divisors is an integer number (18386513452825).

Almost surely, 2^{210122112222020} is an apocalyptic number.

210122112222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210122112222020 is an abundant number, since it is smaller than the sum of its proper divisors (231154210645780).

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

210122112222020 is a wasteful number, since it uses less digits than its factorization.

210122112222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473504807 (or 473504805 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210122112222020 its reverse (20222211221012), we get a palindrome (230344323443032).

The spelling of 210122112222020 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, twenty".