2121111121222 has 8 divisors (see below), whose sum is σ = 3181672922472. Its totient is φ = 1060553480400.

The previous prime is 2121111121201. The next prime is 2121111121291. The reversal of 2121111121222 is 2221211111212.

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 2×2121111121222² (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 2121111121222.

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, 1195597 + ... + 2381527.

It is an arithmetic number, because the mean of its divisors is an integer number (397709115309).

Almost surely, 2^{2121111121222} is an apocalyptic number.

2121111121222 is a deficient number, since it is larger than the sum of its proper divisors (1060561801250).

2121111121222 is a wasteful number, since it uses less digits than its factorization.

2121111121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080214.

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

Adding to 2121111121222 its reverse (2221211111212), we get a palindrome (4342322232434).

It can be divided in two parts, 21211111212 and 22, that multiplied together give a palindrome (466644446664).

The spelling of 2121111121222 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".