21303223101 has 32 divisors (see below), whose sum is σ = 32171126400. Its totient is φ = 13929926400.

The previous prime is 21303223091. The next prime is 21303223121. The reversal of 21303223101 is 10132230312.

21303223101 is a `hidden beast` number, since 2 + 1 + 30 + 322 + 310 + 1 = 666.

It is not a de Polignac number, because 21303223101 - 2⁷ = 21303222973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303223121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255285 + ... + 328293.

It is an arithmetic number, because the mean of its divisors is an integer number (1005347700).

Almost surely, 2^21303223101 is an apocalyptic number.

It is an amenable number.

21303223101 is a deficient number, since it is larger than the sum of its proper divisors (10867903299).

21303223101 is a wasteful number, since it uses less digits than its factorization.

21303223101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73226 (or 73220 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21303223101 its reverse (10132230312), we get a palindrome (31435453413).

The spelling of 21303223101 in words is "twenty-one billion, three hundred three million, two hundred twenty-three thousand, one hundred one".