220201011221001 has 4 divisors (see below), whose sum is σ = 293601348294672. Its totient is φ = 146800674147332.

The previous prime is 220201011220921. The next prime is 220201011221029. The reversal of 220201011221001 is 100122110102022.

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 220201011221001 - 2¹⁴ = 220201011204617 is a prime.

It is a super-3 number, since 3×220201011221001³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (220201011221041) 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, 36700168536831 + ... + 36700168536836.

It is an arithmetic number, because the mean of its divisors is an integer number (73400337073668).

Almost surely, 2^{220201011221001} is an apocalyptic number.

It is an amenable number.

220201011221001 is a deficient number, since it is larger than the sum of its proper divisors (73400337073671).

220201011221001 is an equidigital number, since it uses as much as digits as its factorization.

220201011221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73400337073670.

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

Adding to 220201011221001 its reverse (100122110102022), we get a palindrome (320323121323023).

The spelling of 220201011221001 in words is "two hundred twenty trillion, two hundred one billion, eleven million, two hundred twenty-one thousand, one".