220021021211001 has 4 divisors (see below), whose sum is σ = 293361361614672. Its totient is φ = 146680680807332.

The previous prime is 220021021210981. The next prime is 220021021211039. The reversal of 220021021211001 is 100112120120022.

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 220021021211001 - 2²³ = 220021012822393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220021021211081) 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, 36670170201831 + ... + 36670170201836.

It is an arithmetic number, because the mean of its divisors is an integer number (73340340403668).

Almost surely, 2^{220021021211001} is an apocalyptic number.

It is an amenable number.

220021021211001 is a deficient number, since it is larger than the sum of its proper divisors (73340340403671).

220021021211001 is an equidigital number, since it uses as much as digits as its factorization.

220021021211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73340340403670.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220021021211001 its reverse (100112120120022), we get a palindrome (320133141331023).

It can be divided in two parts, 220021021 and 211001, that added together give a palindrome (220232022).

The spelling of 220021021211001 in words is "two hundred twenty trillion, twenty-one billion, twenty-one million, two hundred eleven thousand, one".