2121221121122 has 16 divisors (see below), whose sum is σ = 3237700075200. Its totient is φ = 1042009307760.

The previous prime is 2121221121101. The next prime is 2121221121133. The reversal of 2121221121122 is 2211211221212.

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

It is a junction number, because it is equal to n+sod(n) for n = 2121221121094 and 2121221121103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5188454 + ... + 5582337.

It is an arithmetic number, because the mean of its divisors is an integer number (202356254700).

Almost surely, 2^{2121221121122} is an apocalyptic number.

2121221121122 is a deficient number, since it is larger than the sum of its proper divisors (1116478954078).

2121221121122 is a wasteful number, since it uses less digits than its factorization.

2121221121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772521.

The product of its digits is 128, while the sum is 20.

Adding to 2121221121122 its reverse (2211211221212), we get a palindrome (4332432342334).

The spelling of 2121221121122 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".