2221121112122 has 16 divisors (see below), whose sum is σ = 3848359574592. Its totient is φ = 950212240320.

The previous prime is 2221121112121. The next prime is 2221121112127. The reversal of 2221121112122 is 2212111211222.

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 = 2221121112094 and 2221121112103.

It is not an unprimeable number, because it can be changed into a prime (2221121112121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2969412878 + ... + 2969413625.

It is an arithmetic number, because the mean of its divisors is an integer number (240522473412).

Almost surely, 2^{2221121112122} is an apocalyptic number.

2221121112122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2221121112122 is a deficient number, since it is larger than the sum of its proper divisors (1627238462470).

2221121112122 is a wasteful number, since it uses less digits than its factorization.

2221121112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938826533.

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

Adding to 2221121112122 its reverse (2212111211222), we get a palindrome (4433232323344).

The spelling of 2221121112122 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, one hundred twenty-two".