221320331011010 has 32 divisors (see below), whose sum is σ = 496677314270592. Its totient is φ = 68982960314880.

The previous prime is 221320331010943. The next prime is 221320331011069. The reversal of 221320331011010 is 10110133023122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143714499887 + ... + 143714501426.

It is an arithmetic number, because the mean of its divisors is an integer number (15521166070956).

Almost surely, 2^{221320331011010} is an apocalyptic number.

221320331011010 is an abundant number, since it is smaller than the sum of its proper divisors (275356983259582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221320331011010 is a wasteful number, since it uses less digits than its factorization.

221320331011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287429001338.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 221320331011010 its reverse (10110133023122), we get a palindrome (231430464034132).

The spelling of 221320331011010 in words is "two hundred twenty-one trillion, three hundred twenty billion, three hundred thirty-one million, eleven thousand, ten".