2121111211222 has 8 divisors (see below), whose sum is σ = 3181744554696. Its totient is φ = 1060529692992.

The previous prime is 2121111211213. The next prime is 2121111211273. The reversal of 2121111211222 is 2221121111212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2121111211222² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2121111211222.

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, 12853828 + ... + 13017799.

It is an arithmetic number, because the mean of its divisors is an integer number (397718069337).

Almost surely, 2^{2121111211222} is an apocalyptic number.

2121111211222 is a deficient number, since it is larger than the sum of its proper divisors (1060633343474).

2121111211222 is a wasteful number, since it uses less digits than its factorization.

2121111211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25912622.

The product of its digits is 64, while the sum is 19.

Adding to 2121111211222 its reverse (2221121111212), we get a palindrome (4342232322434).

The spelling of 2121111211222 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, two hundred eleven thousand, two hundred twenty-two".