1131213210011 has 4 divisors (see below), whose sum is σ = 1190750747400. Its totient is φ = 1071675672624.

The previous prime is 1131213209999. The next prime is 1131213210019. The reversal of 1131213210011 is 1100123121311.

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 1131213210011 - 2⁶ = 1131213209947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131213210019) 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, 29768768666 + ... + 29768768703.

It is an arithmetic number, because the mean of its divisors is an integer number (297687686850).

Almost surely, 2^{1131213210011} is an apocalyptic number.

1131213210011 is a deficient number, since it is larger than the sum of its proper divisors (59537537389).

1131213210011 is an equidigital number, since it uses as much as digits as its factorization.

1131213210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59537537388.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1131213210011 its reverse (1100123121311), we get a palindrome (2231336331322).

The spelling of 1131213210011 in words is "one trillion, one hundred thirty-one billion, two hundred thirteen million, two hundred ten thousand, eleven".