1012022210021 has 2 divisors, whose sum is σ = 1012022210022. Its totient is φ = 1012022210020.

The previous prime is 1012022210011. The next prime is 1012022210039. The reversal of 1012022210021 is 1200122202101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 626274390625 + 385747819396 = 791375^2 + 621086^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012022210021 - 2³⁰ = 1010948468197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012022209978 and 1012022210005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012022210011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506011105010 + 506011105011.

It is an arithmetic number, because the mean of its divisors is an integer number (506011105011).

Almost surely, 2^{1012022210021} is an apocalyptic number.

It is an amenable number.

1012022210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012022210021 is an equidigital number, since it uses as much as digits as its factorization.

1012022210021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1012022210021 its reverse (1200122202101), we get a palindrome (2212144412122).

The spelling of 1012022210021 in words is "one trillion, twelve billion, twenty-two million, two hundred ten thousand, twenty-one".