1211203011132 has 72 divisors (see below), whose sum is σ = 3195106701696. Its totient is φ = 386139651744.

The previous prime is 1211203011131. The next prime is 1211203011143. The reversal of 1211203011132 is 2311103021121.

1211203011132 is a `hidden beast` number, since 1 + 211 + 20 + 301 + 1 + 132 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211203011131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8262823 + ... + 8408129.

It is an arithmetic number, because the mean of its divisors is an integer number (44376481968).

Almost surely, 2^{1211203011132} is an apocalyptic number.

1211203011132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211203011132 is an abundant number, since it is smaller than the sum of its proper divisors (1983903690564).

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

1211203011132 is a wasteful number, since it uses less digits than its factorization.

1211203011132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155407 (or 155402 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1211203011132 its reverse (2311103021121), we get a palindrome (3522306032253).

The spelling of 1211203011132 in words is "one trillion, two hundred eleven billion, two hundred three million, eleven thousand, one hundred thirty-two".