1211202133113 has 32 divisors (see below), whose sum is σ = 1928967586560. Its totient is φ = 661360250880.

The previous prime is 1211202133103. The next prime is 1211202133123. The reversal of 1211202133113 is 3113312021121.

It is an interprime number because it is at equal distance from previous prime (1211202133103) and next prime (1211202133123).

It is not a de Polignac number, because 1211202133113 - 2³² = 1206907165817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1211202133113.

It is not an unprimeable number, because it can be changed into a prime (1211202133103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10192668 + ... + 10310813.

It is an arithmetic number, because the mean of its divisors is an integer number (60280237080).

Almost surely, 2^{1211202133113} is an apocalyptic number.

It is an amenable number.

1211202133113 is a deficient number, since it is larger than the sum of its proper divisors (717765453447).

1211202133113 is a wasteful number, since it uses less digits than its factorization.

1211202133113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20503617.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1211202133113 its reverse (3113312021121), we get a palindrome (4324514154234).

The spelling of 1211202133113 in words is "one trillion, two hundred eleven billion, two hundred two million, one hundred thirty-three thousand, one hundred thirteen".