20121673224 has 64 divisors (see below), whose sum is σ = 51182366400. Its totient is φ = 6591062016.

The previous prime is 20121673219. The next prime is 20121673237. The reversal of 20121673224 is 42237612102.

It is a junction number, because it is equal to n+sod(n) for n = 20121673191 and 20121673200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319272 + ... + 377064.

It is an arithmetic number, because the mean of its divisors is an integer number (799724475).

Almost surely, 2^20121673224 is an apocalyptic number.

20121673224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20121673224 is an abundant number, since it is smaller than the sum of its proper divisors (31060693176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121673224 is a wasteful number, since it uses less digits than its factorization.

20121673224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58054 (or 58050 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 20121673224 in words is "twenty billion, one hundred twenty-one million, six hundred seventy-three thousand, two hundred twenty-four".