1101221039 has 2 divisors, whose sum is σ = 1101221040. Its totient is φ = 1101221038.

The previous prime is 1101221021. The next prime is 1101221111. The reversal of 1101221039 is 9301221011.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101221039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1101221039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101220039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610519 + 550610520.

It is an arithmetic number, because the mean of its divisors is an integer number (550610520).

Almost surely, 2^1101221039 is an apocalyptic number.

1101221039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221039 is an equidigital number, since it uses as much as digits as its factorization.

1101221039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1101221039 is about 33184.6506535778. The cubic root of 1101221039 is about 1032.6619300577.

The spelling of 1101221039 in words is "one billion, one hundred one million, two hundred twenty-one thousand, thirty-nine".