2210212012122 has 12 divisors (see below), whose sum is σ = 4788792692970. Its totient is φ = 736737337368.

The previous prime is 2210212012087. The next prime is 2210212012123. The reversal of 2210212012122 is 2212102120122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2203149458601 + 7062553521 = 1484301^2 + 84039^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 122789556229 = 2210212012122 / (2 + 2 + 1 + 0 + 2 + 1 + 2 + 0 + 1 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2210212012095 and 2210212012104.

It is not an unprimeable number, because it can be changed into a prime (2210212012123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61394778097 + ... + 61394778132.

Almost surely, 2^{2210212012122} is an apocalyptic number.

2210212012122 is an abundant number, since it is smaller than the sum of its proper divisors (2578580680848).

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

2210212012122 is a wasteful number, since it uses less digits than its factorization.

2210212012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122789556237 (or 122789556234 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2210212012122 its reverse (2212102120122), we get a palindrome (4422314132244).

The spelling of 2210212012122 in words is "two trillion, two hundred ten billion, two hundred twelve million, twelve thousand, one hundred twenty-two".