1213124015351 has 16 divisors (see below), whose sum is σ = 1237824239520. Its totient is φ = 1188568442880.

The previous prime is 1213124015347. The next prime is 1213124015357. The reversal of 1213124015351 is 1535104213121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1213124015351 - 2² = 1213124015347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213124015357) 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, 21453251 + ... + 21509723.

It is an arithmetic number, because the mean of its divisors is an integer number (77364014970).

Almost surely, 2^{1213124015351} is an apocalyptic number.

1213124015351 is a deficient number, since it is larger than the sum of its proper divisors (24700224169).

1213124015351 is an equidigital number, since it uses as much as digits as its factorization.

1213124015351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57746.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 1213124015351 its reverse (1535104213121), we get a palindrome (2748228228472).

The spelling of 1213124015351 in words is "one trillion, two hundred thirteen billion, one hundred twenty-four million, fifteen thousand, three hundred fifty-one".