2122100121222 has 64 divisors (see below), whose sum is σ = 4857487427520. Its totient is φ = 686300947200.

The previous prime is 2122100121217. The next prime is 2122100121299. The reversal of 2122100121222 is 2221210012212.

It is a happy number.

2122100121222 is a `hidden beast` number, since 212 + 210 + 0 + 1 + 21 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2122100121195 and 2122100121204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2247033 + ... + 3048500.

It is an arithmetic number, because the mean of its divisors is an integer number (75898241055).

Almost surely, 2^{2122100121222} is an apocalyptic number.

2122100121222 is an abundant number, since it is smaller than the sum of its proper divisors (2735387306298).

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

2122100121222 is a wasteful number, since it uses less digits than its factorization.

2122100121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5295766 (or 5295760 counting only the distinct ones).

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

Adding to 2122100121222 its reverse (2221210012212), we get a palindrome (4343310133434).

The spelling of 2122100121222 in words is "two trillion, one hundred twenty-two billion, one hundred million, one hundred twenty-one thousand, two hundred twenty-two".