32212220 has 48 divisors (see below), whose sum is σ = 71984640. Its totient is φ = 12073536.

The previous prime is 32212211. The next prime is 32212241. The reversal of 32212220 is 2221223.

It is a junction number, because it is equal to n+sod(n) for n = 32212195 and 32212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38729 + ... + 39551.

It is an arithmetic number, because the mean of its divisors is an integer number (1499680).

Almost surely, 2^32212220 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 32212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35992320).

32212220 is an abundant number, since it is smaller than the sum of its proper divisors (39772420).

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

32212220 is a wasteful number, since it uses less digits than its factorization.

32212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 32212220 is about 5675.5810275248. The cubic root of 32212220 is about 318.1804942926.

Adding to 32212220 its reverse (2221223), we get a palindrome (34433443).

The spelling of 32212220 in words is "thirty-two million, two hundred twelve thousand, two hundred twenty".