1213012021127 has 2 divisors, whose sum is σ = 1213012021128. Its totient is φ = 1213012021126.

The previous prime is 1213012021061. The next prime is 1213012021159. The reversal of 1213012021127 is 7211202103121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213012021127 - 2¹⁶ = 1213011955591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213012021327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606506010563 + 606506010564.

It is an arithmetic number, because the mean of its divisors is an integer number (606506010564).

Almost surely, 2^{1213012021127} is an apocalyptic number.

1213012021127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213012021127 is an equidigital number, since it uses as much as digits as its factorization.

1213012021127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 1213012021127 its reverse (7211202103121), we get a palindrome (8424214124248).

The spelling of 1213012021127 in words is "one trillion, two hundred thirteen billion, twelve million, twenty-one thousand, one hundred twenty-seven".