221214422312 has 64 divisors (see below), whose sum is σ = 463007664000. Its totient is φ = 98381654784.

The previous prime is 221214422311. The next prime is 221214422413. The reversal of 221214422312 is 213224412122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (221214422311) 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, 1444139 + ... + 1589957.

It is an arithmetic number, because the mean of its divisors is an integer number (7234494750).

Almost surely, 2^221214422312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221214422312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231503832000).

221214422312 is an abundant number, since it is smaller than the sum of its proper divisors (241793241688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221214422312 is a wasteful number, since it uses less digits than its factorization.

221214422312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146370 (or 146366 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 221214422312 its reverse (213224412122), we get a palindrome (434438834434).

The spelling of 221214422312 in words is "two hundred twenty-one billion, two hundred fourteen million, four hundred twenty-two thousand, three hundred twelve".