2121112211122 has 4 divisors (see below), whose sum is σ = 3181668316686. Its totient is φ = 1060556105560.

The previous prime is 2121112211117. The next prime is 2121112211149. The reversal of 2121112211122 is 2211122111212.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1450316812681 + 670795398441 = 1204291^2 + 819021^2 .

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 2121112211122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530278052779 + ... + 530278052782.

Almost surely, 2^{2121112211122} is an apocalyptic number.

2121112211122 is a deficient number, since it is larger than the sum of its proper divisors (1060556105564).

2121112211122 is a wasteful number, since it uses less digits than its factorization.

2121112211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060556105563.

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

Adding to 2121112211122 its reverse (2211122111212), we get a palindrome (4332234322334).

The spelling of 2121112211122 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred eleven thousand, one hundred twenty-two".