1211201020013 has 16 divisors (see below), whose sum is σ = 1241958904704. Its totient is φ = 1180501808640.

The previous prime is 1211201019997. The next prime is 1211201020021. The reversal of 1211201020013 is 3100201021121.

It is not a de Polignac number, because 1211201020013 - 2⁴ = 1211201019997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211201020013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211201020063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321527456 + ... + 321531222.

It is an arithmetic number, because the mean of its divisors is an integer number (77622431544).

Almost surely, 2^{1211201020013} is an apocalyptic number.

It is an amenable number.

1211201020013 is a deficient number, since it is larger than the sum of its proper divisors (30757884691).

1211201020013 is a wasteful number, since it uses less digits than its factorization.

1211201020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1211201020013 its reverse (3100201021121), we get a palindrome (4311402041134).

The spelling of 1211201020013 in words is "one trillion, two hundred eleven billion, two hundred one million, twenty thousand, thirteen".