20212222121101 has 8 divisors (see below), whose sum is σ = 20460020031360. Its totient is φ = 19964526048192.

The previous prime is 20212222121099. The next prime is 20212222121173. The reversal of 20212222121101 is 10112122221202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20212222121101 - 2¹ = 20212222121099 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 (20212222128101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25059916 + ... + 25853893.

It is an arithmetic number, because the mean of its divisors is an integer number (2557502503920).

Almost surely, 2^{20212222121101} is an apocalyptic number.

It is an amenable number.

20212222121101 is a deficient number, since it is larger than the sum of its proper divisors (247797910259).

20212222121101 is an equidigital number, since it uses as much as digits as its factorization.

20212222121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50918675.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20212222121101 its reverse (10112122221202), we get a palindrome (30324344342303).

The spelling of 20212222121101 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred one".