1211201222039 has 2 divisors, whose sum is σ = 1211201222040. Its totient is φ = 1211201222038.

The previous prime is 1211201222027. The next prime is 1211201222137. The reversal of 1211201222039 is 9302221021121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211201222039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211201221999 and 1211201222017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211201242039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605600611019 + 605600611020.

It is an arithmetic number, because the mean of its divisors is an integer number (605600611020).

Almost surely, 2^{1211201222039} is an apocalyptic number.

1211201222039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211201222039 is an equidigital number, since it uses as much as digits as its factorization.

1211201222039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 1211201222039 in words is "one trillion, two hundred eleven billion, two hundred one million, two hundred twenty-two thousand, thirty-nine".