33221121211021 has 4 divisors (see below), whose sum is σ = 33338510332192. Its totient is φ = 33103732089852.

The previous prime is 33221121210923. The next prime is 33221121211081. The reversal of 33221121211021 is 12011212112233.

It is a happy number.

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 33221121211021 - 2¹⁵ = 33221121178253 is a prime.

It is a super-2 number, since 2×33221121211021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33221121210983 and 33221121211001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221121211081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58694560161 + ... + 58694560726.

It is an arithmetic number, because the mean of its divisors is an integer number (8334627583048).

Almost surely, 2^{33221121211021} is an apocalyptic number.

It is an amenable number.

33221121211021 is a deficient number, since it is larger than the sum of its proper divisors (117389121171).

33221121211021 is a wasteful number, since it uses less digits than its factorization.

33221121211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117389121170.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 33221121211021 its reverse (12011212112233), we get a palindrome (45232333323254).

It can be divided in two parts, 332211212 and 11021, that added together give a palindrome (332222233).

The spelling of 33221121211021 in words is "thirty-three trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, twenty-one".