220000121101 has 4 divisors (see below), whose sum is σ = 220115125692. Its totient is φ = 219885116512.

The previous prime is 220000121063. The next prime is 220000121147. The reversal of 220000121101 is 101121000022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 152001735876 + 67998385225 = 389874^2 + 260765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220000121101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000121171) 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, 57499426 + ... + 57503251.

It is an arithmetic number, because the mean of its divisors is an integer number (55028781423).

Almost surely, 2^220000121101 is an apocalyptic number.

It is an amenable number.

220000121101 is a deficient number, since it is larger than the sum of its proper divisors (115004591).

220000121101 is a wasteful number, since it uses less digits than its factorization.

220000121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115004590.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 220000121101 its reverse (101121000022), we get a palindrome (321121121123).

The spelling of 220000121101 in words is "two hundred twenty billion, one hundred twenty-one thousand, one hundred one".