20211231140524 has 24 divisors (see below), whose sum is σ = 37246246374960. Its totient is φ = 9569875922496.

The previous prime is 20211231140519. The next prime is 20211231140549. The reversal of 20211231140524 is 42504113211202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20211231140492 and 20211231140501.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 53493067 + ... + 53869570.

It is an arithmetic number, because the mean of its divisors is an integer number (1551926932290).

Almost surely, 2^{20211231140524} is an apocalyptic number.

It is an amenable number.

20211231140524 is a deficient number, since it is larger than the sum of its proper divisors (17035015234436).

20211231140524 is a wasteful number, since it uses less digits than its factorization.

20211231140524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107365137 (or 107365135 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 20211231140524 its reverse (42504113211202), we get a palindrome (62715344351726).

The spelling of 20211231140524 in words is "twenty trillion, two hundred eleven billion, two hundred thirty-one million, one hundred forty thousand, five hundred twenty-four".