220021121110201 has 4 divisors (see below), whose sum is σ = 223305018440272. Its totient is φ = 216737223780132.

The previous prime is 220021121110183. The next prime is 220021121110223. The reversal of 220021121110201 is 102011121120022.

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 220021121110201 - 2⁷ = 220021121110073 is a prime.

It is a super-2 number, since 2×220021121110201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220021121110801) 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, 1641948664935 + ... + 1641948665068.

It is an arithmetic number, because the mean of its divisors is an integer number (55826254610068).

Almost surely, 2^{220021121110201} is an apocalyptic number.

It is an amenable number.

220021121110201 is a deficient number, since it is larger than the sum of its proper divisors (3283897330071).

220021121110201 is an equidigital number, since it uses as much as digits as its factorization.

220021121110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283897330070.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220021121110201 its reverse (102011121120022), we get a palindrome (322032242230223).

The spelling of 220021121110201 in words is "two hundred twenty trillion, twenty-one billion, one hundred twenty-one million, one hundred ten thousand, two hundred one".