20121023224 has 16 divisors (see below), whose sum is σ = 38647087920. Its totient is φ = 9815133120.

The previous prime is 20121023173. The next prime is 20121023233. The reversal of 20121023224 is 42232012102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30671964 + ... + 30672619.

It is an arithmetic number, because the mean of its divisors is an integer number (2415442995).

Almost surely, 2^20121023224 is an apocalyptic number.

It is an amenable number.

20121023224 is a deficient number, since it is larger than the sum of its proper divisors (18526064696).

20121023224 is a wasteful number, since it uses less digits than its factorization.

20121023224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61344630 (or 61344626 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20121023224 its reverse (42232012102), we get a palindrome (62353035326).

The spelling of 20121023224 in words is "twenty billion, one hundred twenty-one million, twenty-three thousand, two hundred twenty-four".