221220211210201 has 8 divisors (see below), whose sum is σ = 252823666068224. Its totient is φ = 189616898237760.

The previous prime is 221220211210127. The next prime is 221220211210267. The reversal of 221220211210201 is 102012112022122.

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

It is not a de Polignac number, because 221220211210201 - 2⁹ = 221220211209689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221220211214201) 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, 32109120 + ... + 38385361.

It is an arithmetic number, because the mean of its divisors is an integer number (31602958258528).

Almost surely, 2^{221220211210201} is an apocalyptic number.

It is an amenable number.

221220211210201 is a deficient number, since it is larger than the sum of its proper divisors (31603454858023).

221220211210201 is an equidigital number, since it uses as much as digits as its factorization.

221220211210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70942791.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221220211210201 its reverse (102012112022122), we get a palindrome (323232323232323).

The spelling of 221220211210201 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred eleven million, two hundred ten thousand, two hundred one".