221201133130 has 16 divisors (see below), whose sum is σ = 398824549704. Its totient is φ = 88333228800.

The previous prime is 221201133121. The next prime is 221201133143. The reversal of 221201133130 is 31331102122.

It can be written as a sum of positive squares in 4 ways, for example, as 153865554049 + 67335579081 = 392257^2 + 259491^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221201133098 and 221201133107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18396747 + ... + 18408766.

Almost surely, 2^221201133130 is an apocalyptic number.

221201133130 is a deficient number, since it is larger than the sum of its proper divisors (177623416574).

221201133130 is a wasteful number, since it uses less digits than its factorization.

221201133130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36806121.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221201133130 its reverse (31331102122), we get a palindrome (252532235252).

The spelling of 221201133130 in words is "two hundred twenty-one billion, two hundred one million, one hundred thirty-three thousand, one hundred thirty".