20533221303042 has 64 divisors (see below), whose sum is σ = 48717164724480. Its totient is φ = 5645004605184.

The previous prime is 20533221303041. The next prime is 20533221303073. The reversal of 20533221303042 is 24030312233502.

It is a happy number.

It is a super-2 number, since 2×20533221303042² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20533221303041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28411293 + ... + 29125040.

It is an arithmetic number, because the mean of its divisors is an integer number (761205698820).

Almost surely, 2^{20533221303042} is an apocalyptic number.

20533221303042 is an abundant number, since it is smaller than the sum of its proper divisors (28183943421438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20533221303042 is a wasteful number, since it uses less digits than its factorization.

20533221303042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57536667.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 20533221303042 its reverse (24030312233502), we get a palindrome (44563533536544).

The spelling of 20533221303042 in words is "twenty trillion, five hundred thirty-three billion, two hundred twenty-one million, three hundred three thousand, forty-two".