221543114402 has 32 divisors (see below), whose sum is σ = 364083174000. Its totient is φ = 100636397568.

The previous prime is 221543114329. The next prime is 221543114407. The reversal of 221543114402 is 204411345122.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 198560251201 + 22982863201 = 445601^2 + 151601^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (221543114407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4460618 + ... + 4510010.

Almost surely, 2^221543114402 is an apocalyptic number.

221543114402 is a deficient number, since it is larger than the sum of its proper divisors (142540059598).

221543114402 is a wasteful number, since it uses less digits than its factorization.

221543114402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53990.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 221543114402 its reverse (204411345122), we get a palindrome (425954459524).

The spelling of 221543114402 in words is "two hundred twenty-one billion, five hundred forty-three million, one hundred fourteen thousand, four hundred two".