1212401131311 has 8 divisors (see below), whose sum is σ = 1616542128000. Its totient is φ = 808263777752.

The previous prime is 1212401131309. The next prime is 1212401131343. The reversal of 1212401131311 is 1131311042121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212401131311 - 2¹ = 1212401131309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212401131351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5811 + ... + 1557188.

It is an arithmetic number, because the mean of its divisors is an integer number (202067766000).

Almost surely, 2^{1212401131311} is an apocalyptic number.

1212401131311 is a deficient number, since it is larger than the sum of its proper divisors (404140996689).

1212401131311 is a wasteful number, since it uses less digits than its factorization.

1212401131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821565.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 1212401131311 its reverse (1131311042121), we get a palindrome (2343712173432).

The spelling of 1212401131311 in words is "one trillion, two hundred twelve billion, four hundred one million, one hundred thirty-one thousand, three hundred eleven".