1211131212010 has 32 divisors (see below), whose sum is σ = 2191670784000. Its totient is φ = 481867530240.

The previous prime is 1211131211987. The next prime is 1211131212077. The reversal of 1211131212010 is 102121311121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23446191 + ... + 23497789.

It is an arithmetic number, because the mean of its divisors is an integer number (68489712000).

Almost surely, 2^{1211131212010} is an apocalyptic number.

1211131212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211131212010 is a deficient number, since it is larger than the sum of its proper divisors (980539571990).

1211131212010 is a wasteful number, since it uses less digits than its factorization.

1211131212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64086.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1211131212010 its reverse (102121311121), we get a palindrome (1313252523131).

The spelling of 1211131212010 in words is "one trillion, two hundred eleven billion, one hundred thirty-one million, two hundred twelve thousand, ten".