221012100211222 has 32 divisors (see below), whose sum is σ = 354409223394240. Its totient is φ = 103111751508480.

The previous prime is 221012100211211. The next prime is 221012100211223. The reversal of 221012100211222 is 222112001210122.

It is a self number, because there is not a number n which added to its sum of digits gives 221012100211222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012100211223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10183554 + ... + 23360842.

It is an arithmetic number, because the mean of its divisors is an integer number (11075288231070).

Almost surely, 2^{221012100211222} is an apocalyptic number.

221012100211222 is a deficient number, since it is larger than the sum of its proper divisors (133397123183018).

221012100211222 is a wasteful number, since it uses less digits than its factorization.

221012100211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13186248.

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

Adding to 221012100211222 its reverse (222112001210122), we get a palindrome (443124101421344).

The spelling of 221012100211222 in words is "two hundred twenty-one trillion, twelve billion, one hundred million, two hundred eleven thousand, two hundred twenty-two".