1212422221139 has 2 divisors, whose sum is σ = 1212422221140. Its totient is φ = 1212422221138.

The previous prime is 1212422221133. The next prime is 1212422221193. The reversal of 1212422221139 is 9311222242121.

Together with next prime (1212422221193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212422221139 - 2³⁶ = 1143702744403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212422221133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606211110569 + 606211110570.

It is an arithmetic number, because the mean of its divisors is an integer number (606211110570).

Almost surely, 2^{1212422221139} is an apocalyptic number.

1212422221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212422221139 is an equidigital number, since it uses as much as digits as its factorization.

1212422221139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The spelling of 1212422221139 in words is "one trillion, two hundred twelve billion, four hundred twenty-two million, two hundred twenty-one thousand, one hundred thirty-nine".