1203121132211 has 2 divisors, whose sum is σ = 1203121132212. Its totient is φ = 1203121132210.

The previous prime is 1203121132123. The next prime is 1203121132231. The reversal of 1203121132211 is 1122311213021.

It is an a-pointer prime, because the next prime (1203121132231) can be obtained adding 1203121132211 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203121132211 is a prime.

It is not a weakly prime, because it can be changed into another prime (1203121132231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601560566105 + 601560566106.

It is an arithmetic number, because the mean of its divisors is an integer number (601560566106).

Almost surely, 2^{1203121132211} is an apocalyptic number.

1203121132211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203121132211 is an equidigital number, since it uses as much as digits as its factorization.

1203121132211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1203121132211 its reverse (1122311213021), we get a palindrome (2325432345232).

The spelling of 1203121132211 in words is "one trillion, two hundred three billion, one hundred twenty-one million, one hundred thirty-two thousand, two hundred eleven".