221003332231212 has 384 divisors, whose sum is σ = 602036801372160. Its totient is φ = 70041736800000.

The previous prime is 221003332231189. The next prime is 221003332231229. The reversal of 221003332231212 is 212132233300122.

221003332231212 is a `hidden beast` number, since 2 + 2 + 1 + 0 + 0 + 3 + 332 + 2 + 312 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 46517221837 + ... + 46517226587.

It is an arithmetic number, because the mean of its divisors is an integer number (1567804170240).

Almost surely, 2^{221003332231212} 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 221003332231212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301018400686080).

221003332231212 is an abundant number, since it is smaller than the sum of its proper divisors (381033469140948).

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

221003332231212 is a wasteful number, since it uses less digits than its factorization.

221003332231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6290 (or 6282 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 221003332231212 its reverse (212132233300122), we get a palindrome (433135565531334).

The spelling of 221003332231212 in words is "two hundred twenty-one trillion, three billion, three hundred thirty-two million, two hundred thirty-one thousand, two hundred twelve".