221220033011 has 8 divisors (see below), whose sum is σ = 230189615424. Its totient is φ = 212428066240.

The previous prime is 221220032993. The next prime is 221220033037. The reversal of 221220033011 is 110330022122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221220033011 is a prime.

It is a super-2 number, since 2×221220033011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221220033211) 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, 44401370 + ... + 44406351.

It is an arithmetic number, because the mean of its divisors is an integer number (28773701928).

Almost surely, 2^221220033011 is an apocalyptic number.

221220033011 is a deficient number, since it is larger than the sum of its proper divisors (8969582413).

221220033011 is an equidigital number, since it uses as much as digits as its factorization.

221220033011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88807821.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221220033011 its reverse (110330022122), we get a palindrome (331550055133).

The spelling of 221220033011 in words is "two hundred twenty-one billion, two hundred twenty million, thirty-three thousand, eleven".