2212100202121 has 6 divisors (see below), whose sum is σ = 2264740771290. Its totient is φ = 2160656009568.

The previous prime is 2212100202119. The next prime is 2212100202149. The reversal of 2212100202121 is 1212020012122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1223147521600 + 988952680521 = 1105960^2 + 994461^2 .

It is not a de Polignac number, because 2212100202121 - 2¹ = 2212100202119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212100202095 and 2212100202104.

It is not an unprimeable number, because it can be changed into a prime (2212100202421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 598186416 + ... + 598190113.

It is an arithmetic number, because the mean of its divisors is an integer number (377456795215).

Almost surely, 2^{2212100202121} is an apocalyptic number.

It is an amenable number.

2212100202121 is a deficient number, since it is larger than the sum of its proper divisors (52640569169).

2212100202121 is an equidigital number, since it uses as much as digits as its factorization.

2212100202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196376615 (or 1196376572 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2212100202121 its reverse (1212020012122), we get a palindrome (3424120214243).

The spelling of 2212100202121 in words is "two trillion, two hundred twelve billion, one hundred million, two hundred two thousand, one hundred twenty-one".