2142222124121 has 2 divisors, whose sum is σ = 2142222124122. Its totient is φ = 2142222124120.

The previous prime is 2142222124069. The next prime is 2142222124241. The reversal of 2142222124121 is 1214212222412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1956319729225 + 185902394896 = 1398685^2 + 431164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2142222124121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2142222127121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071111062060 + 1071111062061.

It is an arithmetic number, because the mean of its divisors is an integer number (1071111062061).

Almost surely, 2^{2142222124121} is an apocalyptic number.

It is an amenable number.

2142222124121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142222124121 is an equidigital number, since it uses as much as digits as its factorization.

2142222124121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2048, while the sum is 26.

Adding to 2142222124121 its reverse (1214212222412), we get a palindrome (3356434346533).

The spelling of 2142222124121 in words is "two trillion, one hundred forty-two billion, two hundred twenty-two million, one hundred twenty-four thousand, one hundred twenty-one".