21033213310101 has 16 divisors (see below), whose sum is σ = 28327668969600. Its totient is φ = 13880556755520.

The previous prime is 21033213310079. The next prime is 21033213310127. The reversal of 21033213310101 is 10101331233012.

It is a happy number.

It is not a de Polignac number, because 21033213310101 - 2²³ = 21033204921493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033213310181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12564390 + ... + 14139671.

It is an arithmetic number, because the mean of its divisors is an integer number (1770479310600).

Almost surely, 2^{21033213310101} is an apocalyptic number.

It is an amenable number.

21033213310101 is a deficient number, since it is larger than the sum of its proper divisors (7294455659499).

21033213310101 is a wasteful number, since it uses less digits than its factorization.

21033213310101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26706716.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21033213310101 its reverse (10101331233012), we get a palindrome (31134544543113).

The spelling of 21033213310101 in words is "twenty-one trillion, thirty-three billion, two hundred thirteen million, three hundred ten thousand, one hundred one".