1203211001311 has 8 divisors (see below), whose sum is σ = 1325589799248. Its totient is φ = 1082998200000.

The previous prime is 1203211001269. The next prime is 1203211001339. The reversal of 1203211001311 is 1131001123021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1203211001311 - 2⁷ = 1203211001183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203211001351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541497990 + ... + 541500211.

It is an arithmetic number, because the mean of its divisors is an integer number (165698724906).

Almost surely, 2^{1203211001311} is an apocalyptic number.

1203211001311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1203211001311 is a deficient number, since it is larger than the sum of its proper divisors (122378797937).

1203211001311 is a wasteful number, since it uses less digits than its factorization.

1203211001311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082998313.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1203211001311 its reverse (1131001123021), we get a palindrome (2334212124332).

The spelling of 1203211001311 in words is "one trillion, two hundred three billion, two hundred eleven million, one thousand, three hundred eleven".