2111221121003 has 2 divisors, whose sum is σ = 2111221121004. Its totient is φ = 2111221121002.

The previous prime is 2111221120997. The next prime is 2111221121153. The reversal of 2111221121003 is 3001211221112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111221121003 - 2²⁶ = 2111154012139 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111221120003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055610560501 + 1055610560502.

It is an arithmetic number, because the mean of its divisors is an integer number (1055610560502).

Almost surely, 2^{2111221121003} is an apocalyptic number.

2111221121003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111221121003 is an equidigital number, since it uses as much as digits as its factorization.

2111221121003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2111221121003 its reverse (3001211221112), we get a palindrome (5112432342115).

The spelling of 2111221121003 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, three".