74100111221 has 8 divisors (see below), whose sum is σ = 76802434200. Its totient is φ = 71407598080.

The previous prime is 74100111187. The next prime is 74100111229. The reversal of 74100111221 is 12211100147.

It can be written as a sum of positive squares in 4 ways, for example, as 9767368900 + 64332742321 = 98830^2 + 253639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74100111221 is a prime.

It is a super-2 number, since 2×74100111221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74100111193 and 74100111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74100111229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2437076 + ... + 2467293.

It is an arithmetic number, because the mean of its divisors is an integer number (9600304275).

Almost surely, 2^74100111221 is an apocalyptic number.

It is an amenable number.

74100111221 is a deficient number, since it is larger than the sum of its proper divisors (2702322979).

74100111221 is a wasteful number, since it uses less digits than its factorization.

74100111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4904919.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 74100111221 its reverse (12211100147), we get a palindrome (86311211368).

The spelling of 74100111221 in words is "seventy-four billion, one hundred million, one hundred eleven thousand, two hundred twenty-one".