21212203023113 has 8 divisors (see below), whose sum is σ = 21451250590848. Its totient is φ = 20973792068064.

The previous prime is 21212203023101. The next prime is 21212203023217. The reversal of 21212203023113 is 31132030221212.

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 21212203023113 - 2⁴ = 21212203023097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21212203022113) 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, 159086156 + ... + 159219437.

It is an arithmetic number, because the mean of its divisors is an integer number (2681406323856).

Almost surely, 2^{21212203023113} is an apocalyptic number.

It is an amenable number.

21212203023113 is a deficient number, since it is larger than the sum of its proper divisors (239047567735).

21212203023113 is a wasteful number, since it uses less digits than its factorization.

21212203023113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318306343.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21212203023113 its reverse (31132030221212), we get a palindrome (52344233244325).

The spelling of 21212203023113 in words is "twenty-one trillion, two hundred twelve billion, two hundred three million, twenty-three thousand, one hundred thirteen".