1122010000021 has 2 divisors, whose sum is σ = 1122010000022. Its totient is φ = 1122010000020.

The previous prime is 1122010000019. The next prime is 1122010000117. The reversal of 1122010000021 is 1200000102211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 927925697521 + 194084302500 = 963289^2 + 440550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122010000021 - 2¹ = 1122010000019 is a prime.

Together with 1122010000019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1122009999962 and 1122010000007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122010000121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561005000010 + 561005000011.

It is an arithmetic number, because the mean of its divisors is an integer number (561005000011).

Almost surely, 2^{1122010000021} is an apocalyptic number.

It is an amenable number.

1122010000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122010000021 is an equidigital number, since it uses as much as digits as its factorization.

1122010000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1122010000021 its reverse (1200000102211), we get a palindrome (2322010102232).

The spelling of 1122010000021 in words is "one trillion, one hundred twenty-two billion, ten million, twenty-one", and thus it is an aban number.