212033231321221 has 8 divisors (see below), whose sum is σ = 212074041608000. Its totient is φ = 211992421930848.

The previous prime is 212033231321189. The next prime is 212033231321237. The reversal of 212033231321221 is 122123132330212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212033231321221 - 2⁵ = 212033231321189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212033231321221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212033231321321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653400010 + ... + 653724436.

It is an arithmetic number, because the mean of its divisors is an integer number (26509255201000).

Almost surely, 2^{212033231321221} is an apocalyptic number.

It is an amenable number.

212033231321221 is a deficient number, since it is larger than the sum of its proper divisors (40810286779).

212033231321221 is a wasteful number, since it uses less digits than its factorization.

212033231321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448203.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 212033231321221 its reverse (122123132330212), we get a palindrome (334156363651433).

The spelling of 212033231321221 in words is "two hundred twelve trillion, thirty-three billion, two hundred thirty-one million, three hundred twenty-one thousand, two hundred twenty-one".