1211133031230 has 32 divisors (see below), whose sum is σ = 2977614870048. Its totient is φ = 315091520000.

The previous prime is 1211133031187. The next prime is 1211133031237. The reversal of 1211133031230 is 321303311121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1211133031197 and 1211133031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211133031237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492329271 + ... + 492331730.

It is an arithmetic number, because the mean of its divisors is an integer number (93050464689).

Almost surely, 2^{1211133031230} is an apocalyptic number.

1211133031230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211133031230 is an abundant number, since it is smaller than the sum of its proper divisors (1766481838818).

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

1211133031230 is a wasteful number, since it uses less digits than its factorization.

1211133031230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984661052.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1211133031230 its reverse (321303311121), we get a palindrome (1532436342351).

The spelling of 1211133031230 in words is "one trillion, two hundred eleven billion, one hundred thirty-three million, thirty-one thousand, two hundred thirty".