33242143404421 has 24 divisors (see below), whose sum is σ = 39550097697344. Its totient is φ = 27368195742720.

The previous prime is 33242143404419. The next prime is 33242143404433. The reversal of 33242143404421 is 12440434124233.

It is not a de Polignac number, because 33242143404421 - 2¹ = 33242143404419 is a prime.

It is a super-2 number, since 2×33242143404421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33242143404451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13492575 + ... + 15764956.

Almost surely, 2^{33242143404421} is an apocalyptic number.

It is an amenable number.

33242143404421 is a deficient number, since it is larger than the sum of its proper divisors (6307954292923).

33242143404421 is a wasteful number, since it uses less digits than its factorization.

33242143404421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29257789 (or 29257760 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 33242143404421 its reverse (12440434124233), we get a palindrome (45682577528654).

The spelling of 33242143404421 in words is "thirty-three trillion, two hundred forty-two billion, one hundred forty-three million, four hundred four thousand, four hundred twenty-one".