1211322003187 has 2 divisors, whose sum is σ = 1211322003188. Its totient is φ = 1211322003186.

The previous prime is 1211322003097. The next prime is 1211322003233. The reversal of 1211322003187 is 7813002231121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211322003187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211322003487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605661001593 + 605661001594.

It is an arithmetic number, because the mean of its divisors is an integer number (605661001594).

Almost surely, 2^{1211322003187} is an apocalyptic number.

1211322003187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211322003187 is an equidigital number, since it uses as much as digits as its factorization.

1211322003187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 1211322003187 in words is "one trillion, two hundred eleven billion, three hundred twenty-two million, three thousand, one hundred eighty-seven".