32221111212 has 18 divisors (see below), whose sum is σ = 81447808988. Its totient is φ = 10740370392.

The previous prime is 32221111187. The next prime is 32221111231. The reversal of 32221111212 is 21211112223.

32221111212 is a `hidden beast` number, since 322 + 21 + 111 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 447515398 + ... + 447515469.

Almost surely, 2^32221111212 is an apocalyptic number.

It is an amenable number.

32221111212 is an abundant number, since it is smaller than the sum of its proper divisors (49226697776).

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

32221111212 is a wasteful number, since it uses less digits than its factorization.

32221111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895030877 (or 895030872 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 32221111212 its reverse (21211112223), we get a palindrome (53432223435).

The spelling of 32221111212 in words is "thirty-two billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twelve".