21223233232212 has 96 divisors (see below), whose sum is σ = 55544616142848. Its totient is φ = 6251268960000.

The previous prime is 21223233232147. The next prime is 21223233232291.

It is a happy number.

21223233232212 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21223233232212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5768614 + ... + 8701917.

It is an arithmetic number, because the mean of its divisors is an integer number (578589751488).

Almost surely, 2^{21223233232212} is an apocalyptic number.

21223233232212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21223233232212 is an abundant number, since it is smaller than the sum of its proper divisors (34321382910636).

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

21223233232212 is a wasteful number, since it uses less digits than its factorization.

21223233232212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14470861 (or 14470859 counting only the distinct ones).

The product of its digits is 20736, while the sum is 30.

It can be divided in two parts, 2122323 and 3232212, that added together give a palindrome (5354535).

The spelling of 21223233232212 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirty-three million, two hundred thirty-two thousand, two hundred twelve".