221134047040 has 56 divisors (see below), whose sum is σ = 557550489672. Its totient is φ = 83250462720.

The previous prime is 221134047031. The next prime is 221134047047. The reversal of 221134047040 is 40740431122.

It can be written as a sum of positive squares in 4 ways, for example, as 92620400896 + 128513646144 = 304336^2 + 358488^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221134047047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20319381 + ... + 20330260.

Almost surely, 2^221134047040 is an apocalyptic number.

221134047040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221134047040 is an abundant number, since it is smaller than the sum of its proper divisors (336416442632).

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

221134047040 is a wasteful number, since it uses less digits than its factorization.

221134047040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40649675 (or 40649665 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 221134047040 its reverse (40740431122), we get a palindrome (261874478162).

The spelling of 221134047040 in words is "two hundred twenty-one billion, one hundred thirty-four million, forty-seven thousand, forty".