220201200111021 has 4 divisors (see below), whose sum is σ = 293601600148032. Its totient is φ = 146800800074012.

The previous prime is 220201200111007. The next prime is 220201200111043. The reversal of 220201200111021 is 120111002102022.

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 220201200111021 - 2³⁵ = 220166840372653 is a prime.

It is a super-3 number, since 3×220201200111021³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220201200111121) 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, 36700200018501 + ... + 36700200018506.

It is an arithmetic number, because the mean of its divisors is an integer number (73400400037008).

Almost surely, 2^{220201200111021} is an apocalyptic number.

It is an amenable number.

220201200111021 is a deficient number, since it is larger than the sum of its proper divisors (73400400037011).

220201200111021 is an equidigital number, since it uses as much as digits as its factorization.

220201200111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73400400037010.

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

Adding to 220201200111021 its reverse (120111002102022), we get a palindrome (340312202213043).

The spelling of 220201200111021 in words is "two hundred twenty trillion, two hundred one billion, two hundred million, one hundred eleven thousand, twenty-one".