221102200124 has 36 divisors (see below), whose sum is σ = 442645810824. Its totient is φ = 96044388096.

The previous prime is 221102200117. The next prime is 221102200129. The reversal of 221102200124 is 421002201122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102200129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7341314 + ... + 7371369.

Almost surely, 2^221102200124 is an apocalyptic number.

It is an amenable number.

221102200124 is an abundant number, since it is smaller than the sum of its proper divisors (221543610700).

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

221102200124 is a wasteful number, since it uses less digits than its factorization.

221102200124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14712734 (or 14712715 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221102200124 its reverse (421002201122), we get a palindrome (642104401246).

The spelling of 221102200124 in words is "two hundred twenty-one billion, one hundred two million, two hundred thousand, one hundred twenty-four".