221931149111 has 16 divisors (see below), whose sum is σ = 254994723648. Its totient is φ = 189207705600.

The previous prime is 221931149107. The next prime is 221931149117. The reversal of 221931149111 is 111941139122.

221931149111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221931149111 - 2² = 221931149107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221931149117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10447481 + ... + 10468701.

It is an arithmetic number, because the mean of its divisors is an integer number (15937170228).

Almost surely, 2^221931149111 is an apocalyptic number.

221931149111 is a deficient number, since it is larger than the sum of its proper divisors (33063574537).

221931149111 is a wasteful number, since it uses less digits than its factorization.

221931149111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29162.

The product of its digits is 3888, while the sum is 35.

The spelling of 221931149111 in words is "two hundred twenty-one billion, nine hundred thirty-one million, one hundred forty-nine thousand, one hundred eleven".