221121021203011 has 8 divisors (see below), whose sum is σ = 234300419820800. Its totient is φ = 208095767598600.

The previous prime is 221121021203003. The next prime is 221121021203023. The reversal of 221121021203011 is 110302120121122.

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 221121021203011 - 2³ = 221121021203003 is a prime.

It is a super-2 number, since 2×221121021203011² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 221121021203011.

It is not an unprimeable number, because it can be changed into a prime (221121021203111) 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, 38536250391 + ... + 38536256128.

It is an arithmetic number, because the mean of its divisors is an integer number (29287552477600).

Almost surely, 2^{221121021203011} is an apocalyptic number.

221121021203011 is a deficient number, since it is larger than the sum of its proper divisors (13179398617789).

221121021203011 is a wasteful number, since it uses less digits than its factorization.

221121021203011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77072506689.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 221121021203011 its reverse (110302120121122), we get a palindrome (331423141324133).

The spelling of 221121021203011 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twenty-one million, two hundred three thousand, eleven".