1222012109987 has 2 divisors, whose sum is σ = 1222012109988. Its totient is φ = 1222012109986.

The previous prime is 1222012109897. The next prime is 1222012110013. The reversal of 1222012109987 is 7899012102221.

Together with previous prime (1222012109897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222012109987 - 2³⁰ = 1220938368163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222012103987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611006054993 + 611006054994.

It is an arithmetic number, because the mean of its divisors is an integer number (611006054994).

Almost surely, 2^{1222012109987} is an apocalyptic number.

1222012109987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222012109987 is an equidigital number, since it uses as much as digits as its factorization.

1222012109987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 1222012109987 in words is "one trillion, two hundred twenty-two billion, twelve million, one hundred nine thousand, nine hundred eighty-seven".