221122012100012 has 6 divisors (see below), whose sum is σ = 386963521175028. Its totient is φ = 110561006050004.

The previous prime is 221122012099999. The next prime is 221122012100023. The reversal of 221122012100012 is 210001210221122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27640251512498 + ... + 27640251512505.

It is an arithmetic number, because the mean of its divisors is an integer number (64493920195838).

Almost surely, 2^{221122012100012} is an apocalyptic number.

It is an amenable number.

221122012100012 is a deficient number, since it is larger than the sum of its proper divisors (165841509075016).

221122012100012 is a wasteful number, since it uses less digits than its factorization.

221122012100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55280503025007 (or 55280503025005 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221122012100012 its reverse (210001210221122), we get a palindrome (431123222321134).

The spelling of 221122012100012 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, twelve million, one hundred thousand, twelve".