221011210011010 has 16 divisors (see below), whose sum is σ = 398286555735096. Its totient is φ = 88300844512128.

The previous prime is 221011210010977. The next prime is 221011210011019. The reversal of 221011210011010 is 10110012110122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 131316312804889 + 89694897206121 = 11459333^2 + 9470739^2 .

It is not an unprimeable number, because it can be changed into a prime (221011210011019) 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, 12954927579 + ... + 12954944638.

Almost surely, 2^{221011210011010} is an apocalyptic number.

221011210011010 is a deficient number, since it is larger than the sum of its proper divisors (177275345724086).

221011210011010 is a wasteful number, since it uses less digits than its factorization.

221011210011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25909873077.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 221011210011010 its reverse (10110012110122), we get a palindrome (231121222121132).

The spelling of 221011210011010 in words is "two hundred twenty-one trillion, eleven billion, two hundred ten million, eleven thousand, ten".