20213445124 has 6 divisors (see below), whose sum is σ = 35373528974. Its totient is φ = 10106722560.

The previous prime is 20213445113. The next prime is 20213445149. The reversal of 20213445124 is 42154431202.

It can be written as a sum of positive squares in only one way, i.e., 20198094400 + 15350724 = 142120^2 + 3918^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20213445092 and 20213445101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526680637 + ... + 2526680644.

Almost surely, 2^20213445124 is an apocalyptic number.

It is an amenable number.

20213445124 is a deficient number, since it is larger than the sum of its proper divisors (15160083850).

20213445124 is a wasteful number, since it uses less digits than its factorization.

20213445124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053361285 (or 5053361283 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20213445124 its reverse (42154431202), we get a palindrome (62367876326).

The spelling of 20213445124 in words is "twenty billion, two hundred thirteen million, four hundred forty-five thousand, one hundred twenty-four".