1122106621 has 2 divisors, whose sum is σ = 1122106622. Its totient is φ = 1122106620.

The previous prime is 1122106613. The next prime is 1122106637. The reversal of 1122106621 is 1266012211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571688100 + 550418521 = 23910^2 + 23461^2 .

It is an emirp because it is prime and its reverse (1266012211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122106621 - 2³ = 1122106613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122106592 and 1122106601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122106121) 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, 561053310 + 561053311.

It is an arithmetic number, because the mean of its divisors is an integer number (561053311).

Almost surely, 2^1122106621 is an apocalyptic number.

It is an amenable number.

1122106621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122106621 is an equidigital number, since it uses as much as digits as its factorization.

1122106621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1122106621 is about 33497.8599465697. The cubic root of 1122106621 is about 1039.1495207324.

Adding to 1122106621 its reverse (1266012211), we get a palindrome (2388118832).

The spelling of 1122106621 in words is "one billion, one hundred twenty-two million, one hundred six thousand, six hundred twenty-one".