220212212121101 has 4 divisors (see below), whose sum is σ = 220218942561600. Its totient is φ = 220205481680604.

The previous prime is 220212212121029. The next prime is 220212212121103. The reversal of 220212212121101 is 101121212212022.

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 220212212121101 - 2¹⁸ = 220212211858957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212212121103) 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, 3365171171 + ... + 3365236608.

It is an arithmetic number, because the mean of its divisors is an integer number (55054735640400).

Almost surely, 2^{220212212121101} is an apocalyptic number.

It is an amenable number.

220212212121101 is a deficient number, since it is larger than the sum of its proper divisors (6730440499).

220212212121101 is an equidigital number, since it uses as much as digits as its factorization.

220212212121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730440498.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 220212212121101 its reverse (101121212212022), we get a palindrome (321333424333123).

The spelling of 220212212121101 in words is "two hundred twenty trillion, two hundred twelve billion, two hundred twelve million, one hundred twenty-one thousand, one hundred one".