20111324402 has 16 divisors (see below), whose sum is σ = 34197394560. Its totient is φ = 8793615312.

The previous prime is 20111324381. The next prime is 20111324473. The reversal of 20111324402 is 20442311102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20355098 + ... + 20356085.

It is an arithmetic number, because the mean of its divisors is an integer number (2137337160).

Almost surely, 2^20111324402 is an apocalyptic number.

20111324402 is a deficient number, since it is larger than the sum of its proper divisors (14086070158).

20111324402 is a wasteful number, since it uses less digits than its factorization.

20111324402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40711217.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20111324402 its reverse (20442311102), we get a palindrome (40553635504).

The spelling of 20111324402 in words is "twenty billion, one hundred eleven million, three hundred twenty-four thousand, four hundred two".