201122122012220 has 12 divisors (see below), whose sum is σ = 422356456225704. Its totient is φ = 80448848804880.

The previous prime is 201122122012181. The next prime is 201122122012243. The reversal of 201122122012220 is 22210221221102.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10056106100611 = 201122122012220 / (2 + 0 + 1 + 1 + 2 + 2 + 1 + 2 + 2 + 0 + 1 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 201122122012192 and 201122122012201.

It is a congruent number.

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, 5028053050286 + ... + 5028053050325.

It is an arithmetic number, because the mean of its divisors is an integer number (35196371352142).

Almost surely, 2^{201122122012220} is an apocalyptic number.

201122122012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201122122012220 is an abundant number, since it is smaller than the sum of its proper divisors (221234334213484).

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

201122122012220 is a wasteful number, since it uses less digits than its factorization.

201122122012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056106100620 (or 10056106100618 counting only the distinct ones).

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

Adding to 201122122012220 its reverse (22210221221102), we get a palindrome (223332343233322).

The spelling of 201122122012220 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred twenty-two million, twelve thousand, two hundred twenty".