21322022101 has 2 divisors, whose sum is σ = 21322022102. Its totient is φ = 21322022100.

The previous prime is 21322022063. The next prime is 21322022123. The reversal of 21322022101 is 10122022312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19258500625 + 2063521476 = 138775^2 + 45426^2 .

It is a cyclic number.

It is not a de Polignac number, because 21322022101 - 2¹¹ = 21322020053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322022131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661011050 + 10661011051.

It is an arithmetic number, because the mean of its divisors is an integer number (10661011051).

Almost surely, 2^21322022101 is an apocalyptic number.

It is an amenable number.

21322022101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322022101 is an equidigital number, since it uses as much as digits as its factorization.

21322022101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21322022101 its reverse (10122022312), we get a palindrome (31444044413).

The spelling of 21322022101 in words is "twenty-one billion, three hundred twenty-two million, twenty-two thousand, one hundred one".