22221221201012 has 24 divisors (see below), whose sum is σ = 41393759198400. Its totient is φ = 10407573734976.

The previous prime is 22221221200987. The next prime is 22221221201029. The reversal of 22221221201012 is 21010212212222.

It is a congruent number.

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, 1642602728 + ... + 1642616255.

It is an arithmetic number, because the mean of its divisors is an integer number (1724739966600).

Almost surely, 2^{22221221201012} is an apocalyptic number.

It is an amenable number.

22221221201012 is a deficient number, since it is larger than the sum of its proper divisors (19172537997388).

22221221201012 is a wasteful number, since it uses less digits than its factorization.

22221221201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285219095 (or 3285219093 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22221221201012 its reverse (21010212212222), we get a palindrome (43231433413234).

The spelling of 22221221201012 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, twelve".