2222121100122 has 64 divisors (see below), whose sum is σ = 6156526003200. Its totient is φ = 577174310640.

The previous prime is 2222121100097. The next prime is 2222121100127. The reversal of 2222121100122 is 2210011212222.

It is a happy number.

2222121100122 is a `hidden beast` number, since 222 + 212 + 110 + 0 + 122 = 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 = 2222121100095 and 2222121100104.

It is not an unprimeable number, because it can be changed into a prime (2222121100127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267206172 + ... + 267214487.

It is an arithmetic number, because the mean of its divisors is an integer number (96195718800).

Almost surely, 2^{2222121100122} is an apocalyptic number.

2222121100122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2222121100122 is an abundant number, since it is smaller than the sum of its proper divisors (3934404903078).

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

2222121100122 is a wasteful number, since it uses less digits than its factorization.

2222121100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534420688 (or 534420682 counting only the distinct ones).

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

Adding to 2222121100122 its reverse (2210011212222), we get a palindrome (4432132312344).

The spelling of 2222121100122 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred thousand, one hundred twenty-two".