221102122102012 has 24 divisors (see below), whose sum is σ = 396947244844080. Its totient is φ = 107722498575360.

The previous prime is 221102122102003. The next prime is 221102122102019. The reversal of 221102122102012 is 210201221201122.

It is a super-2 number, since 2×221102122102012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102122102019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4234348837 + ... + 4234401052.

It is an arithmetic number, because the mean of its divisors is an integer number (16539468535170).

Almost surely, 2^{221102122102012} is an apocalyptic number.

It is an amenable number.

221102122102012 is a deficient number, since it is larger than the sum of its proper divisors (175845122742068).

221102122102012 is a wasteful number, since it uses less digits than its factorization.

221102122102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8468750061 (or 8468750059 counting only the distinct ones).

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

Adding to 221102122102012 its reverse (210201221201122), we get a palindrome (431303343303134).

The spelling of 221102122102012 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twenty-two million, one hundred two thousand, twelve".