30202012223021 has 2 divisors, whose sum is σ = 30202012223022. Its totient is φ = 30202012223020.

The previous prime is 30202012223011. The next prime is 30202012223057. The reversal of 30202012223021 is 12032221020203.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26780511150121 + 3421501072900 = 5174989^2 + 1849730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30202012223021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30202012222984 and 30202012223002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30202012223011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101006111510 + 15101006111511.

It is an arithmetic number, because the mean of its divisors is an integer number (15101006111511).

Almost surely, 2^{30202012223021} is an apocalyptic number.

It is an amenable number.

30202012223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30202012223021 is an equidigital number, since it uses as much as digits as its factorization.

30202012223021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30202012223021 its reverse (12032221020203), we get a palindrome (42234233243224).

The spelling of 30202012223021 in words is "thirty trillion, two hundred two billion, twelve million, two hundred twenty-three thousand, twenty-one".