2220012211121 has 2 divisors, whose sum is σ = 2220012211122. Its totient is φ = 2220012211120.

The previous prime is 2220012211099. The next prime is 2220012211133. The reversal of 2220012211121 is 1211122100222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1222738350625 + 997273860496 = 1105775^2 + 998636^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220012211121 - 2⁶ = 2220012211057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220012211121.

It is not a weakly prime, because it can be changed into another prime (2220012211321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110006105560 + 1110006105561.

It is an arithmetic number, because the mean of its divisors is an integer number (1110006105561).

Almost surely, 2^{2220012211121} is an apocalyptic number.

It is an amenable number.

2220012211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220012211121 is an equidigital number, since it uses as much as digits as its factorization.

2220012211121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2220012211121 its reverse (1211122100222), we get a palindrome (3431134311343).

The spelling of 2220012211121 in words is "two trillion, two hundred twenty billion, twelve million, two hundred eleven thousand, one hundred twenty-one".