33221420431143 has 32 divisors (see below), whose sum is σ = 50830389872640. Its totient is φ = 18906095825760.

The previous prime is 33221420431123. The next prime is 33221420431181. The reversal of 33221420431143 is 34113402412233.

It is not a de Polignac number, because 33221420431143 - 2⁹ = 33221420430631 is a prime.

It is a super-2 number, since 2×33221420431143² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221420431123) 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, 1949008 + ... + 8381018.

It is an arithmetic number, because the mean of its divisors is an integer number (1588449683520).

Almost surely, 2^{33221420431143} is an apocalyptic number.

33221420431143 is a deficient number, since it is larger than the sum of its proper divisors (17608969441497).

33221420431143 is a wasteful number, since it uses less digits than its factorization.

33221420431143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433027.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 33221420431143 its reverse (34113402412233), we get a palindrome (67334822843376).

The spelling of 33221420431143 in words is "thirty-three trillion, two hundred twenty-one billion, four hundred twenty million, four hundred thirty-one thousand, one hundred forty-three".