21122133301 has 8 divisors (see below), whose sum is σ = 21530963160. Its totient is φ = 20713684992.

The previous prime is 21122133287. The next prime is 21122133323. The reversal of 21122133301 is 10333122112.

It can be written as a sum of positive squares in 4 ways, for example, as 1035874225 + 20086259076 = 32185^2 + 141726^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21122133301 - 2⁹ = 21122132789 is a prime.

It is a super-2 number, since 2×21122133301² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122173301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17685 + ... + 206293.

It is an arithmetic number, because the mean of its divisors is an integer number (2691370395).

Almost surely, 2^21122133301 is an apocalyptic number.

It is an amenable number.

21122133301 is a deficient number, since it is larger than the sum of its proper divisors (408829859).

21122133301 is a wasteful number, since it uses less digits than its factorization.

21122133301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190775.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21122133301 its reverse (10333122112), we get a palindrome (31455255413).

The spelling of 21122133301 in words is "twenty-one billion, one hundred twenty-two million, one hundred thirty-three thousand, three hundred one".