20112131403441 has 160 divisors (see below), whose sum is σ = 38124557273088. Its totient is φ = 10262691394560.

The previous prime is 20112131403281. The next prime is 20112131403449. The reversal of 20112131403441 is 14430413121102.

It is a happy number.

20112131403441 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 2 + 1 + 314 + 0 + 344 + 1 = 666.

It is not a de Polignac number, because 20112131403441 - 2¹⁰ = 20112131402417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20112131403449) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 147443116 + ... + 147579458.

Almost surely, 2^{20112131403441} is an apocalyptic number.

20112131403441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20112131403441 is a deficient number, since it is larger than the sum of its proper divisors (18012425869647).

20112131403441 is a wasteful number, since it uses less digits than its factorization.

20112131403441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136793 (or 136784 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 20112131403441 its reverse (14430413121102), we get a palindrome (34542544524543).

The spelling of 20112131403441 in words is "twenty trillion, one hundred twelve billion, one hundred thirty-one million, four hundred three thousand, four hundred forty-one".