20401113222144 has 132 divisors (see below), whose sum is σ = 59167283365944. Its totient is φ = 6770412797952.

The previous prime is 20401113222103. The next prime is 20401113222163. The reversal of 20401113222144 is 44122231110402.

20401113222144 is a `hidden beast` number, since 2 + 0 + 401 + 1 + 1 + 32 + 221 + 4 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2783877 + ... + 6967940.

Almost surely, 2^{20401113222144} is an apocalyptic number.

20401113222144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20401113222144 is an abundant number, since it is smaller than the sum of its proper divisors (38766170143800).

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

20401113222144 is a wasteful number, since it uses less digits than its factorization.

20401113222144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9752070 (or 9752049 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 20401113222144 its reverse (44122231110402), we get a palindrome (64523344332546).

The spelling of 20401113222144 in words is "twenty trillion, four hundred one billion, one hundred thirteen million, two hundred twenty-two thousand, one hundred forty-four".