2221121013424 has 20 divisors (see below), whose sum is σ = 4303450489120. Its totient is φ = 1110553145280.

The previous prime is 2221121013421. The next prime is 2221121013427. The reversal of 2221121013424 is 4243101211222.

It is an interprime number because it is at equal distance from previous prime (2221121013421) and next prime (2221121013427).

It is not an unprimeable number, because it can be changed into a prime (2221121013421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2677534 + ... + 3407554.

It is an arithmetic number, because the mean of its divisors is an integer number (215172524456).

Almost surely, 2^{2221121013424} is an apocalyptic number.

It is an amenable number.

2221121013424 is a deficient number, since it is larger than the sum of its proper divisors (2082329475696).

2221121013424 is a wasteful number, since it uses less digits than its factorization.

2221121013424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920188 (or 920182 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 2221121013424 its reverse (4243101211222), we get a palindrome (6464222224646).

The spelling of 2221121013424 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, thirteen thousand, four hundred twenty-four".