1211133213000 has 96 divisors (see below), whose sum is σ = 4093630290360. Its totient is φ = 322968854400.

The previous prime is 1211133212987. The next prime is 1211133213019. The reversal of 1211133213000 is 3123311121.

1211133213000 is a `hidden beast` number, since 1 + 21 + 11 + 332 + 1 + 300 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 256021832196 + 955111380804 = 505986^2 + 977298^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67276179 + ... + 67294178.

Almost surely, 2^{1211133213000} is an apocalyptic number.

1211133213000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211133213000 is an abundant number, since it is smaller than the sum of its proper divisors (2882497077360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211133213000 is a wasteful number, since it uses less digits than its factorization.

1211133213000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134570384 (or 134570367 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1211133213000 its reverse (3123311121), we get a palindrome (1214256524121).

The spelling of 1211133213000 in words is "one trillion, two hundred eleven billion, one hundred thirty-three million, two hundred thirteen thousand".