1221112222039 has 2 divisors, whose sum is σ = 1221112222040. Its totient is φ = 1221112222038.

The previous prime is 1221112222003. The next prime is 1221112222069. The reversal of 1221112222039 is 9302222111221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221112222039 - 2²¹ = 1221110124887 is a prime.

It is a super-2 number, since 2×1221112222039² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221112221998 and 1221112222016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221112222069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610556111019 + 610556111020.

It is an arithmetic number, because the mean of its divisors is an integer number (610556111020).

Almost surely, 2^{1221112222039} is an apocalyptic number.

1221112222039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221112222039 is an equidigital number, since it uses as much as digits as its factorization.

1221112222039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 1221112222039 in words is "one trillion, two hundred twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, thirty-nine".