220012122101 has 4 divisors (see below), whose sum is σ = 220159881900. Its totient is φ = 219864362304.

The previous prime is 220012122059. The next prime is 220012122131. The reversal of 220012122101 is 101221210022.

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 122674362001 + 97337760100 = 350249^2 + 311990^2 .

It is a cyclic number.

It is not a de Polignac number, because 220012122101 - 2¹⁴ = 220012105717 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 (220012122131) 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, 73877666 + ... + 73880643.

It is an arithmetic number, because the mean of its divisors is an integer number (55039970475).

Almost surely, 2^220012122101 is an apocalyptic number.

It is an amenable number.

220012122101 is a deficient number, since it is larger than the sum of its proper divisors (147759799).

220012122101 is a wasteful number, since it uses less digits than its factorization.

220012122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147759798.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220012122101 its reverse (101221210022), we get a palindrome (321233332123).

It can be divided in two parts, 2200121 and 22101, that added together give a palindrome (2222222).

The spelling of 220012122101 in words is "two hundred twenty billion, twelve million, one hundred twenty-two thousand, one hundred one".