221011233001 has 8 divisors (see below), whose sum is σ = 241272537800. Its totient is φ = 201215705472.

The previous prime is 221011232999. The next prime is 221011233017. The reversal of 221011233001 is 100332110122.

It can be written as a sum of positive squares in 4 ways, for example, as 55403744400 + 165607488601 = 235380^2 + 406949^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221011233001 - 2¹ = 221011232999 is a prime.

It is a super-2 number, since 2×221011233001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221011233041) 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, 116443326 + ... + 116445223.

It is an arithmetic number, because the mean of its divisors is an integer number (30159067225).

Almost surely, 2^221011233001 is an apocalyptic number.

It is an amenable number.

221011233001 is a deficient number, since it is larger than the sum of its proper divisors (20261304799).

221011233001 is a wasteful number, since it uses less digits than its factorization.

221011233001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232888635.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221011233001 its reverse (100332110122), we get a palindrome (321343343123).

The spelling of 221011233001 in words is "two hundred twenty-one billion, eleven million, two hundred thirty-three thousand, one".