221112011151 has 24 divisors (see below), whose sum is σ = 330122559104. Its totient is φ = 142464329280.

The previous prime is 221112011117. The next prime is 221112011171. The reversal of 221112011151 is 151110211122.

It is a happy number.

It is not a de Polignac number, because 221112011151 - 2¹¹ = 221112009103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112011171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 312256 + ... + 734661.

Almost surely, 2^221112011151 is an apocalyptic number.

221112011151 is a deficient number, since it is larger than the sum of its proper divisors (109010547953).

221112011151 is a wasteful number, since it uses less digits than its factorization.

221112011151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047711 (or 1047708 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 18.

Adding to 221112011151 its reverse (151110211122), we get a palindrome (372222222273).

The spelling of 221112011151 in words is "two hundred twenty-one billion, one hundred twelve million, eleven thousand, one hundred fifty-one".