21211223322 has 16 divisors (see below), whose sum is σ = 43568999712. Its totient is φ = 6879315600.

The previous prime is 21211223317. The next prime is 21211223339. The reversal of 21211223322 is 22332211212.

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 7 ways as a sum of consecutive naturals, for example, 47772804 + ... + 47773247.

It is an arithmetic number, because the mean of its divisors is an integer number (2723062482).

Almost surely, 2^21211223322 is an apocalyptic number.

21211223322 is an abundant number, since it is smaller than the sum of its proper divisors (22357776390).

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

21211223322 is a wasteful number, since it uses less digits than its factorization.

21211223322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95546093.

The product of its digits is 576, while the sum is 21.

Adding to 21211223322 its reverse (22332211212), we get a palindrome (43543434534).

The spelling of 21211223322 in words is "twenty-one billion, two hundred eleven million, two hundred twenty-three thousand, three hundred twenty-two".