221012102201122 has 4 divisors (see below), whose sum is σ = 331518153301686. Its totient is φ = 110506051100560.

The previous prime is 221012102201089. The next prime is 221012102201129. The reversal of 221012102201122 is 221102201210122.

221012102201122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 198869816698641 + 22142285502481 = 14102121^2 + 4705559^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221012102201122.

It is not an unprimeable number, because it can be changed into a prime (221012102201129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55253025550279 + ... + 55253025550282.

Almost surely, 2^{221012102201122} is an apocalyptic number.

221012102201122 is a deficient number, since it is larger than the sum of its proper divisors (110506051100564).

221012102201122 is a wasteful number, since it uses less digits than its factorization.

221012102201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110506051100563.

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

Adding to 221012102201122 its reverse (221102201210122), we get a palindrome (442114303411244).

The spelling of 221012102201122 in words is "two hundred twenty-one trillion, twelve billion, one hundred two million, two hundred one thousand, one hundred twenty-two".