2111221121122 has 4 divisors (see below), whose sum is σ = 3166831681686. Its totient is φ = 1055610560560.

The previous prime is 2111221121003. The next prime is 2111221121153. The reversal of 2111221121122 is 2211211221112.

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., 1919806996041 + 191414125081 = 1385571^2 + 437509^2 .

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 2111221121122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527805280279 + ... + 527805280282.

Almost surely, 2^{2111221121122} is an apocalyptic number.

2111221121122 is a deficient number, since it is larger than the sum of its proper divisors (1055610560564).

2111221121122 is a wasteful number, since it uses less digits than its factorization.

2111221121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055610560563.

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

Adding to 2111221121122 its reverse (2211211221112), we get a palindrome (4322432342234).

The spelling of 2111221121122 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".