1131213211101 has 12 divisors (see below), whose sum is σ = 1643758919712. Its totient is φ = 749626318536.

The previous prime is 1131213211039. The next prime is 1131213211123. The reversal of 1131213211101 is 1011123121311.

1131213211101 is a `hidden beast` number, since 113 + 121 + 321 + 110 + 1 = 666.

It is not a de Polignac number, because 1131213211101 - 2²³ = 1131204822493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131213211181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376316931 + ... + 376319936.

It is an arithmetic number, because the mean of its divisors is an integer number (136979909976).

Almost surely, 2^{1131213211101} is an apocalyptic number.

It is an amenable number.

1131213211101 is a deficient number, since it is larger than the sum of its proper divisors (512545708611).

1131213211101 is a wasteful number, since it uses less digits than its factorization.

1131213211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752637040 (or 752637037 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 1131213211101 its reverse (1011123121311), we get a palindrome (2142336332412).

The spelling of 1131213211101 in words is "one trillion, one hundred thirty-one billion, two hundred thirteen million, two hundred eleven thousand, one hundred one".