221121033001 has 4 divisors (see below), whose sum is σ = 241222945104. Its totient is φ = 201019120900.

The previous prime is 221121032983. The next prime is 221121033053. The reversal of 221121033001 is 100330121122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221121033001 - 2¹¹ = 221121030953 is a prime.

It is a super-2 number, since 2×221121033001² (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 (221121033901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10050956035 + ... + 10050956056.

It is an arithmetic number, because the mean of its divisors is an integer number (60305736276).

Almost surely, 2^221121033001 is an apocalyptic number.

It is an amenable number.

221121033001 is a deficient number, since it is larger than the sum of its proper divisors (20101912103).

221121033001 is a wasteful number, since it uses less digits than its factorization.

221121033001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20101912102.

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

Adding to 221121033001 its reverse (100330121122), we get a palindrome (321451154123).

The spelling of 221121033001 in words is "two hundred twenty-one billion, one hundred twenty-one million, thirty-three thousand, one".