74112012111221 has 32 divisors (see below), whose sum is σ = 85436447526912. Its totient is φ = 62974901545920.

The previous prime is 74112012111217. The next prime is 74112012111233. The reversal of 74112012111221 is 12211121021147.

It is not a de Polignac number, because 74112012111221 - 2² = 74112012111217 is a prime.

It is a super-2 number, since 2×74112012111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74112012116221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328825250 + ... + 329050556.

It is an arithmetic number, because the mean of its divisors is an integer number (2669888985216).

Almost surely, 2^{74112012111221} is an apocalyptic number.

It is an amenable number.

74112012111221 is a deficient number, since it is larger than the sum of its proper divisors (11324435415691).

74112012111221 is a wasteful number, since it uses less digits than its factorization.

74112012111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226449.

The product of its (nonzero) digits is 448, while the sum is 26.

Adding to 74112012111221 its reverse (12211121021147), we get a palindrome (86323133132368).

The spelling of 74112012111221 in words is "seventy-four trillion, one hundred twelve billion, twelve million, one hundred eleven thousand, two hundred twenty-one".