221012532410 has 32 divisors (see below), whose sum is σ = 398939908752. Its totient is φ = 88156961280.

The previous prime is 221012532359. The next prime is 221012532413. The reversal of 221012532410 is 14235210122.

It can be written as a sum of positive squares in 8 ways, for example, as 59013527329 + 161999005081 = 242927^2 + 402491^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221012532413) 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, 7624304 + ... + 7653236.

Almost surely, 2^221012532410 is an apocalyptic number.

221012532410 is a deficient number, since it is larger than the sum of its proper divisors (177927376342).

221012532410 is a wasteful number, since it uses less digits than its factorization.

221012532410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31058.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 221012532410 its reverse (14235210122), we get a palindrome (235247742532).

The spelling of 221012532410 in words is "two hundred twenty-one billion, twelve million, five hundred thirty-two thousand, four hundred ten".