20403122132 has 24 divisors (see below), whose sum is σ = 36394936200. Its totient is φ = 10005528960.

The previous prime is 20403122119. The next prime is 20403122147. The reversal of 20403122132 is 23122130402.

It can be written as a sum of positive squares in 4 ways, for example, as 66650896 + 20336471236 = 8164^2 + 142606^2 .

It is a congruent number.

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, 34643 + ... + 204954.

It is an arithmetic number, because the mean of its divisors is an integer number (1516455675).

Almost surely, 2^20403122132 is an apocalyptic number.

It is an amenable number.

20403122132 is a deficient number, since it is larger than the sum of its proper divisors (15991814068).

20403122132 is a wasteful number, since it uses less digits than its factorization.

20403122132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240011 (or 240009 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20403122132 its reverse (23122130402), we get a palindrome (43525252534).

The spelling of 20403122132 in words is "twenty billion, four hundred three million, one hundred twenty-two thousand, one hundred thirty-two".