1221110870039 has 2 divisors, whose sum is σ = 1221110870040. Its totient is φ = 1221110870038.

The previous prime is 1221110870033. The next prime is 1221110870053. The reversal of 1221110870039 is 9300780111221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221110870039 - 2¹² = 1221110865943 is a prime.

It is a super-2 number, since 2×1221110870039² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221110869990 and 1221110870008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221110870033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610555435019 + 610555435020.

It is an arithmetic number, because the mean of its divisors is an integer number (610555435020).

Almost surely, 2^{1221110870039} is an apocalyptic number.

1221110870039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221110870039 is an equidigital number, since it uses as much as digits as its factorization.

1221110870039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 35.

The spelling of 1221110870039 in words is "one trillion, two hundred twenty-one billion, one hundred ten million, eight hundred seventy thousand, thirty-nine".