74022202122221 has 4 divisors (see below), whose sum is σ = 74182770890844. Its totient is φ = 73861633353600.

The previous prime is 74022202122157. The next prime is 74022202122241. The reversal of 74022202122221 is 12222120222047.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26640937728196 + 47381264394025 = 5161486^2 + 6883405^2 .

It is a cyclic number.

It is not a de Polignac number, because 74022202122221 - 2⁶ = 74022202122157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74022202122241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80284383620 + ... + 80284384541.

It is an arithmetic number, because the mean of its divisors is an integer number (18545692722711).

Almost surely, 2^{74022202122221} is an apocalyptic number.

It is an amenable number.

74022202122221 is a deficient number, since it is larger than the sum of its proper divisors (160568768623).

74022202122221 is a wasteful number, since it uses less digits than its factorization.

74022202122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160568768622.

The product of its (nonzero) digits is 7168, while the sum is 29.

Adding to 74022202122221 its reverse (12222120222047), we get a palindrome (86244322344268).

The spelling of 74022202122221 in words is "seventy-four trillion, twenty-two billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty-one".