1212103110131 has 4 divisors (see below), whose sum is σ = 1241666600664. Its totient is φ = 1182539619600.

The previous prime is 1212103110091. The next prime is 1212103110173. The reversal of 1212103110131 is 1310113012121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212103110131 is a prime.

It is a super-2 number, since 2×1212103110131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212103113131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14781745205 + ... + 14781745286.

It is an arithmetic number, because the mean of its divisors is an integer number (310416650166).

Almost surely, 2^{1212103110131} is an apocalyptic number.

1212103110131 is a deficient number, since it is larger than the sum of its proper divisors (29563490533).

1212103110131 is an equidigital number, since it uses as much as digits as its factorization.

1212103110131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29563490532.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1212103110131 its reverse (1310113012121), we get a palindrome (2522216122252).

The spelling of 1212103110131 in words is "one trillion, two hundred twelve billion, one hundred three million, one hundred ten thousand, one hundred thirty-one".