221021222101012 has 12 divisors (see below), whose sum is σ = 386951939348800. Its totient is φ = 110463525144216.

The previous prime is 221021222100983. The next prime is 221021222101091. The reversal of 221021222101012 is 210101222120122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11771466012 + ... + 11771484787.

Almost surely, 2^{221021222101012} is an apocalyptic number.

It is an amenable number.

221021222101012 is a deficient number, since it is larger than the sum of its proper divisors (165930717247788).

221021222101012 is a wasteful number, since it uses less digits than its factorization.

221021222101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23542953150 (or 23542953148 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221021222101012 its reverse (210101222120122), we get a palindrome (431122444221134).

The spelling of 221021222101012 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred twenty-two million, one hundred one thousand, twelve".