20133221435 has 16 divisors (see below), whose sum is σ = 24997494240. Its totient is φ = 15548359680.

The previous prime is 20133221399. The next prime is 20133221453. The reversal of 20133221435 is 53412233102.

It is a happy number.

It is not a de Polignac number, because 20133221435 - 2⁶ = 20133221371 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1176299 + ... + 1193291.

It is an arithmetic number, because the mean of its divisors is an integer number (1562343390).

Almost surely, 2^20133221435 is an apocalyptic number.

20133221435 is a deficient number, since it is larger than the sum of its proper divisors (4864272805).

20133221435 is a wasteful number, since it uses less digits than its factorization.

20133221435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25198.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 20133221435 its reverse (53412233102), we get a palindrome (73545454537).

The spelling of 20133221435 in words is "twenty billion, one hundred thirty-three million, two hundred twenty-one thousand, four hundred thirty-five".