33220231223131 has 32 divisors (see below), whose sum is σ = 34832570572800. Its totient is φ = 31656305640960.

The previous prime is 33220231223119. The next prime is 33220231223161. The reversal of 33220231223131 is 13132213202233.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 33220231223131 - 2¹³ = 33220231214939 is a prime.

It is a super-2 number, since 2×33220231223131² (a number of 28 digits) contains 22 as substring.

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 33220231223131.

It is not an unprimeable number, because it can be changed into a prime (33220231223161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 473720751 + ... + 473790871.

It is an arithmetic number, because the mean of its divisors is an integer number (1088517830400).

Almost surely, 2^{33220231223131} is an apocalyptic number.

33220231223131 is a deficient number, since it is larger than the sum of its proper divisors (1612339349669).

33220231223131 is a wasteful number, since it uses less digits than its factorization.

33220231223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71899.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 33220231223131 its reverse (13132213202233), we get a palindrome (46352444425364).

The spelling of 33220231223131 in words is "thirty-three trillion, two hundred twenty billion, two hundred thirty-one million, two hundred twenty-three thousand, one hundred thirty-one".