20402131041224 has 16 divisors (see below), whose sum is σ = 38555208268800. Its totient is φ = 10120742169552.

The previous prime is 20402131041211. The next prime is 20402131041241. The reversal of 20402131041224 is 42214013120402.

It is a junction number, because it is equal to n+sod(n) for n = 20402131041193 and 20402131041202.

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, 10040417804 + ... + 10040419835.

It is an arithmetic number, because the mean of its divisors is an integer number (2409700516800).

Almost surely, 2^{20402131041224} is an apocalyptic number.

It is an amenable number.

20402131041224 is a deficient number, since it is larger than the sum of its proper divisors (18153077227576).

20402131041224 is a wasteful number, since it uses less digits than its factorization.

20402131041224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20080837772 (or 20080837768 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20402131041224 its reverse (42214013120402), we get a palindrome (62616144161626).

The spelling of 20402131041224 in words is "twenty trillion, four hundred two billion, one hundred thirty-one million, forty-one thousand, two hundred twenty-four".