221002011001 has 8 divisors (see below), whose sum is σ = 230628924864. Its totient is φ = 211376608080.

The previous prime is 221002010989. The next prime is 221002011011. The reversal of 221002011001 is 100110200122.

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 221002011001 - 2⁵ = 221002010969 is a prime.

It is a super-2 number, since 2×221002011001² (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 (221002011011) 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, 73611 + ... + 668896.

It is an arithmetic number, because the mean of its divisors is an integer number (28828615608).

Almost surely, 2^221002011001 is an apocalyptic number.

It is an amenable number.

221002011001 is a deficient number, since it is larger than the sum of its proper divisors (9626913863).

221002011001 is a wasteful number, since it uses less digits than its factorization.

221002011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755471.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221002011001 its reverse (100110200122), we get a palindrome (321112211123).

The spelling of 221002011001 in words is "two hundred twenty-one billion, two million, eleven thousand, one".