221123214331 has 16 divisors (see below), whose sum is σ = 232693171200. Its totient is φ = 209722296960.

The previous prime is 221123214311. The next prime is 221123214341. The reversal of 221123214331 is 133412321122.

It is a cyclic number.

It is not a de Polignac number, because 221123214331 - 2⁹ = 221123213819 is a prime.

It is a super-2 number, since 2×221123214331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221123214296 and 221123214305.

It is not an unprimeable number, because it can be changed into a prime (221123214311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1547395 + ... + 1684243.

It is an arithmetic number, because the mean of its divisors is an integer number (14543323200).

Almost surely, 2^221123214331 is an apocalyptic number.

221123214331 is a deficient number, since it is larger than the sum of its proper divisors (11569956869).

221123214331 is a wasteful number, since it uses less digits than its factorization.

221123214331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137466.

The product of its digits is 1728, while the sum is 25.

Adding to 221123214331 its reverse (133412321122), we get a palindrome (354535535453).

The spelling of 221123214331 in words is "two hundred twenty-one billion, one hundred twenty-three million, two hundred fourteen thousand, three hundred thirty-one".