220220121101 has 4 divisors (see below), whose sum is σ = 220272051804. Its totient is φ = 220168190400.

The previous prime is 220220121029. The next prime is 220220121103. The reversal of 220220121101 is 101121022022.

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 219370456900 + 849664201 = 468370^2 + 29149^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220121101 - 2¹⁴ = 220220104717 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 (220220121103) 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, 25958990 + ... + 25967471.

It is an arithmetic number, because the mean of its divisors is an integer number (55068012951).

Almost surely, 2^220220121101 is an apocalyptic number.

It is an amenable number.

220220121101 is a deficient number, since it is larger than the sum of its proper divisors (51930703).

220220121101 is an equidigital number, since it uses as much as digits as its factorization.

220220121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51930702.

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

Adding to 220220121101 its reverse (101121022022), we get a palindrome (321341143123).

The spelling of 220220121101 in words is "two hundred twenty billion, two hundred twenty million, one hundred twenty-one thousand, one hundred one".