221022001022122 has 4 divisors (see below), whose sum is σ = 331533001533186. Its totient is φ = 110511000511060.

The previous prime is 221022001022113. The next prime is 221022001022131. The reversal of 221022001022122 is 221220100220122.

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

It is an interprime number because it is at equal distance from previous prime (221022001022113) and next prime (221022001022131).

It can be written as a sum of positive squares in only one way, i.e., 123206914219321 + 97815086802801 = 11099861^2 + 9890151^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221022001022122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55255500255529 + ... + 55255500255532.

Almost surely, 2^{221022001022122} is an apocalyptic number.

221022001022122 is a deficient number, since it is larger than the sum of its proper divisors (110511000511064).

221022001022122 is a wasteful number, since it uses less digits than its factorization.

221022001022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110511000511063.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221022001022122 its reverse (221220100220122), we get a palindrome (442242101242244).

The spelling of 221022001022122 in words is "two hundred twenty-one trillion, twenty-two billion, one million, twenty-two thousand, one hundred twenty-two".