221111211331412 has 12 divisors (see below), whose sum is σ = 386945654837280. Its totient is φ = 110555309949336.

The previous prime is 221111211331399. The next prime is 221111211331453. The reversal of 221111211331412 is 214133112111122.

221111211331412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72242462 + ... + 75240917.

It is an arithmetic number, because the mean of its divisors is an integer number (32245471236440).

Almost surely, 2^{221111211331412} is an apocalyptic number.

It is an amenable number.

221111211331412 is a deficient number, since it is larger than the sum of its proper divisors (165834443505868).

221111211331412 is a wasteful number, since it uses less digits than its factorization.

221111211331412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147858190 (or 147858188 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

Adding to 221111211331412 its reverse (214133112111122), we get a palindrome (435244323442534).

The spelling of 221111211331412 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred eleven million, three hundred thirty-one thousand, four hundred twelve".