221211212033 has 8 divisors (see below), whose sum is σ = 254225177280. Its totient is φ = 188550337680.

The previous prime is 221211212021. The next prime is 221211212077. The reversal of 221211212033 is 330212112122.

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 221211212033 - 2⁴ = 221211212017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221211211996 and 221211212014.

It is not an unprimeable number, because it can be changed into a prime (221211512033) 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, 88271378 + ... + 88273883.

It is an arithmetic number, because the mean of its divisors is an integer number (31778147160).

Almost surely, 2^221211212033 is an apocalyptic number.

It is an amenable number.

221211212033 is a deficient number, since it is larger than the sum of its proper divisors (33013965247).

221211212033 is a wasteful number, since it uses less digits than its factorization.

221211212033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176545447.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221211212033 its reverse (330212112122), we get a palindrome (551423324155).

The spelling of 221211212033 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred twelve thousand, thirty-three".