221011210001 has 16 divisors (see below), whose sum is σ = 228516556800. Its totient is φ = 213529726800.

The previous prime is 221011209977. The next prime is 221011210027. The reversal of 221011210001 is 100012110122.

It is a cyclic number.

It is not a de Polignac number, because 221011210001 - 2²⁶ = 220944101137 is a prime.

It is a super-2 number, since 2×221011210001² (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 (221011210801) 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, 75197990 + ... + 75200928.

It is an arithmetic number, because the mean of its divisors is an integer number (14282284800).

Almost surely, 2^221011210001 is an apocalyptic number.

It is an amenable number.

221011210001 is a deficient number, since it is larger than the sum of its proper divisors (7505346799).

221011210001 is a wasteful number, since it uses less digits than its factorization.

221011210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221011210001 its reverse (100012110122), we get a palindrome (321023320123).

The spelling of 221011210001 in words is "two hundred twenty-one billion, eleven million, two hundred ten thousand, one".