221032231541 has 32 divisors (see below), whose sum is σ = 256179231360. Its totient is φ = 188475750400.

The previous prime is 221032231499. The next prime is 221032231573. The reversal of 221032231541 is 145132230122.

It is a cyclic number.

It is not a de Polignac number, because 221032231541 - 2⁶ = 221032231477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221032231541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221032231241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129333395 + ... + 129335103.

It is an arithmetic number, because the mean of its divisors is an integer number (8005600980).

Almost surely, 2^221032231541 is an apocalyptic number.

It is an amenable number.

221032231541 is a deficient number, since it is larger than the sum of its proper divisors (35146999819).

221032231541 is a wasteful number, since it uses less digits than its factorization.

221032231541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 221032231541 its reverse (145132230122), we get a palindrome (366164461663).

The spelling of 221032231541 in words is "two hundred twenty-one billion, thirty-two million, two hundred thirty-one thousand, five hundred forty-one".