21213100101233 has 8 divisors (see below), whose sum is σ = 21844685520768. Its totient is φ = 20587799114064.

The previous prime is 21213100101211. The next prime is 21213100101239. The reversal of 21213100101233 is 33210100131212.

It is a happy number.

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 21213100101233 - 2¹⁴ = 21213100084849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21213100101239) 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, 1571101241 + ... + 1571114742.

It is an arithmetic number, because the mean of its divisors is an integer number (2730585690096).

Almost surely, 2^{21213100101233} is an apocalyptic number.

It is an amenable number.

21213100101233 is a deficient number, since it is larger than the sum of its proper divisors (631585419535).

21213100101233 is a wasteful number, since it uses less digits than its factorization.

21213100101233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142216183.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21213100101233 its reverse (33210100131212), we get a palindrome (54423200232445).

The spelling of 21213100101233 in words is "twenty-one trillion, two hundred thirteen billion, one hundred million, one hundred one thousand, two hundred thirty-three".