21123030310201 has 8 divisors (see below), whose sum is σ = 22327801257600. Its totient is φ = 19927562613840.

The previous prime is 21123030310199. The next prime is 21123030310229. The reversal of 21123030310201 is 10201303032112.

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 21123030310201 - 2¹ = 21123030310199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21123030310241) 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, 2325808090 + ... + 2325817171.

It is an arithmetic number, because the mean of its divisors is an integer number (2790975157200).

Almost surely, 2^{21123030310201} is an apocalyptic number.

It is an amenable number.

21123030310201 is a deficient number, since it is larger than the sum of its proper divisors (1204770947399).

21123030310201 is a wasteful number, since it uses less digits than its factorization.

21123030310201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651625519.

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

Adding to 21123030310201 its reverse (10201303032112), we get a palindrome (31324333342313).

The spelling of 21123030310201 in words is "twenty-one trillion, one hundred twenty-three billion, thirty million, three hundred ten thousand, two hundred one".