2221123404012 has 48 divisors (see below), whose sum is σ = 5194899825024. Its totient is φ = 738622368000.

The previous prime is 2221123403999. The next prime is 2221123404037. The reversal of 2221123404012 is 2104043211222.

It is a super-2 number, since 2×2221123404012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8923812 + ... + 9169332.

It is an arithmetic number, because the mean of its divisors is an integer number (108227079688).

Almost surely, 2^{2221123404012} is an apocalyptic number.

It is an amenable number.

2221123404012 is an abundant number, since it is smaller than the sum of its proper divisors (2973776421012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221123404012 is a wasteful number, since it uses less digits than its factorization.

2221123404012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247310 (or 247308 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 2221123404012 its reverse (2104043211222), we get a palindrome (4325166615234).

The spelling of 2221123404012 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-three million, four hundred four thousand, twelve".