220211221001 has 4 divisors (see below), whose sum is σ = 220212391632. Its totient is φ = 220210050372.

The previous prime is 220211220973. The next prime is 220211221033. The reversal of 220211221001 is 100122112022.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 220211221001 - 2⁶ = 220211220937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220210221001) 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, 232091 + ... + 703056.

It is an arithmetic number, because the mean of its divisors is an integer number (55053097908).

Almost surely, 2^220211221001 is an apocalyptic number.

It is an amenable number.

220211221001 is a deficient number, since it is larger than the sum of its proper divisors (1170631).

220211221001 is an equidigital number, since it uses as much as digits as its factorization.

220211221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170630.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220211221001 its reverse (100122112022), we get a palindrome (320333333023).

The spelling of 220211221001 in words is "two hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, one".