1102021993 has 2 divisors, whose sum is σ = 1102021994. Its totient is φ = 1102021992.

The previous prime is 1102021933. The next prime is 1102022003. The reversal of 1102021993 is 3991202011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 579990889 + 522031104 = 24083^2 + 22848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102021993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1102021933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551010996 + 551010997.

It is an arithmetic number, because the mean of its divisors is an integer number (551010997).

Almost surely, 2^1102021993 is an apocalyptic number.

It is an amenable number.

1102021993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102021993 is an equidigital number, since it uses as much as digits as its factorization.

1102021993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1102021993 is about 33196.7165996880. The cubic root of 1102021993 is about 1032.9122322907.

The spelling of 1102021993 in words is "one billion, one hundred two million, twenty-one thousand, nine hundred ninety-three".