2121120220222 has 4 divisors (see below), whose sum is σ = 3181680330336. Its totient is φ = 1060560110110.

The previous prime is 2121120220201. The next prime is 2121120220223. The reversal of 2121120220222 is 2220220211212.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2121120220222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121120220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530280055054 + ... + 530280055057.

It is an arithmetic number, because the mean of its divisors is an integer number (795420082584).

Almost surely, 2^{2121120220222} is an apocalyptic number.

2121120220222 is a deficient number, since it is larger than the sum of its proper divisors (1060560110114).

2121120220222 is a wasteful number, since it uses less digits than its factorization.

2121120220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060560110113.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2121120220222 its reverse (2220220211212), we get a palindrome (4341340431434).

The spelling of 2121120220222 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, two hundred twenty thousand, two hundred twenty-two".