1203213113311 has 4 divisors (see below), whose sum is σ = 1312596123624. Its totient is φ = 1093830103000.

The previous prime is 1203213113309. The next prime is 1203213113383. The reversal of 1203213113311 is 1133113123021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1203213113311 - 2¹ = 1203213113309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203213113111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54691505140 + ... + 54691505161.

It is an arithmetic number, because the mean of its divisors is an integer number (328149030906).

Almost surely, 2^{1203213113311} is an apocalyptic number.

1203213113311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1203213113311 is a deficient number, since it is larger than the sum of its proper divisors (109383010313).

1203213113311 is a wasteful number, since it uses less digits than its factorization.

1203213113311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109383010312.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1203213113311 its reverse (1133113123021), we get a palindrome (2336326236332).

The spelling of 1203213113311 in words is "one trillion, two hundred three billion, two hundred thirteen million, one hundred thirteen thousand, three hundred eleven".