322010111821 has 2 divisors, whose sum is σ = 322010111822. Its totient is φ = 322010111820.

The previous prime is 322010111809. The next prime is 322010111861. The reversal of 322010111821 is 128111010223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261518709321 + 60491402500 = 511389^2 + 245950^2 .

It is a cyclic number.

It is not a de Polignac number, because 322010111821 - 2⁹ = 322010111309 is a prime.

It is a super-2 number, since 2×322010111821² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 322010111792 and 322010111801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322010111861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161005055910 + 161005055911.

It is an arithmetic number, because the mean of its divisors is an integer number (161005055911).

Almost surely, 2^322010111821 is an apocalyptic number.

It is an amenable number.

322010111821 is a deficient number, since it is larger than the sum of its proper divisors (1).

322010111821 is an equidigital number, since it uses as much as digits as its factorization.

322010111821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 22.

The spelling of 322010111821 in words is "three hundred twenty-two billion, ten million, one hundred eleven thousand, eight hundred twenty-one".