1213210120387 has 2 divisors, whose sum is σ = 1213210120388. Its totient is φ = 1213210120386.

The previous prime is 1213210120337. The next prime is 1213210120391. The reversal of 1213210120387 is 7830210123121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213210120387 - 2⁷ = 1213210120259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213210120327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606605060193 + 606605060194.

It is an arithmetic number, because the mean of its divisors is an integer number (606605060194).

Almost surely, 2^{1213210120387} is an apocalyptic number.

1213210120387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213210120387 is an equidigital number, since it uses as much as digits as its factorization.

1213210120387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 1213210120387 in words is "one trillion, two hundred thirteen billion, two hundred ten million, one hundred twenty thousand, three hundred eighty-seven".