221002101110122 has 4 divisors (see below), whose sum is σ = 331503151665186. Its totient is φ = 110501050555060.

The previous prime is 221002101110069. The next prime is 221002101110123. The reversal of 221002101110122 is 221011101200122.

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., 142707369948361 + 78294731161761 = 11946019^2 + 8848431^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221002101110096 and 221002101110105.

It is not an unprimeable number, because it can be changed into a prime (221002101110123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55250525277529 + ... + 55250525277532.

Almost surely, 2^{221002101110122} is an apocalyptic number.

221002101110122 is a deficient number, since it is larger than the sum of its proper divisors (110501050555064).

221002101110122 is a wasteful number, since it uses less digits than its factorization.

221002101110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110501050555063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221002101110122 its reverse (221011101200122), we get a palindrome (442013202310244).

The spelling of 221002101110122 in words is "two hundred twenty-one trillion, two billion, one hundred one million, one hundred ten thousand, one hundred twenty-two".