20401324012 has 6 divisors (see below), whose sum is σ = 35702317028. Its totient is φ = 10200662004.

The previous prime is 20401323997. The next prime is 20401324049. The reversal of 20401324012 is 21042310402.

It is a super-2 number, since 2×20401324012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550165498 + ... + 2550165505.

Almost surely, 2^20401324012 is an apocalyptic number.

It is an amenable number.

20401324012 is a deficient number, since it is larger than the sum of its proper divisors (15300993016).

20401324012 is a wasteful number, since it uses less digits than its factorization.

20401324012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100331007 (or 5100331005 counting only the distinct ones).

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

Adding to 20401324012 its reverse (21042310402), we get a palindrome (41443634414).

The spelling of 20401324012 in words is "twenty billion, four hundred one million, three hundred twenty-four thousand, twelve".