21033311232212 has 12 divisors (see below), whose sum is σ = 37326721342176. Its totient is φ = 10368533705880.

The previous prime is 21033311232211. The next prime is 21033311232221. The reversal of 21033311232212 is 21223211333012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033311232211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37030477238 + ... + 37030477805.

It is an arithmetic number, because the mean of its divisors is an integer number (3110560111848).

Almost surely, 2^{21033311232212} is an apocalyptic number.

It is an amenable number.

21033311232212 is a deficient number, since it is larger than the sum of its proper divisors (16293410109964).

21033311232212 is a wasteful number, since it uses less digits than its factorization.

21033311232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74060955118 (or 74060955116 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21033311232212 its reverse (21223211333012), we get a palindrome (42256522565224).

The spelling of 21033311232212 in words is "twenty-one trillion, thirty-three billion, three hundred eleven million, two hundred thirty-two thousand, two hundred twelve".