20133221100101 has 4 divisors (see below), whose sum is σ = 20148625249152. Its totient is φ = 20117816951052.

The previous prime is 20133221100089. The next prime is 20133221100107. The reversal of 20133221100101 is 10100112233102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20133221100101 - 2³⁰ = 20132147358277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20133221100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133221100107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7702072565 + ... + 7702075178.

It is an arithmetic number, because the mean of its divisors is an integer number (5037156312288).

Almost surely, 2^{20133221100101} is an apocalyptic number.

It is an amenable number.

20133221100101 is a deficient number, since it is larger than the sum of its proper divisors (15404149051).

20133221100101 is a wasteful number, since it uses less digits than its factorization.

20133221100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15404149050.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20133221100101 its reverse (10100112233102), we get a palindrome (30233333333203).

The spelling of 20133221100101 in words is "twenty trillion, one hundred thirty-three billion, two hundred twenty-one million, one hundred thousand, one hundred one".