2131224202044 has 144 divisors (see below), whose sum is σ = 6802475516928. Its totient is φ = 548184789504.

The previous prime is 2131224202039. The next prime is 2131224202049. The reversal of 2131224202044 is 4402024221312.

It is a happy number.

2131224202044 is a `hidden beast` number, since 2 + 1 + 31 + 2 + 2 + 420 + 204 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (2131224202039) and next prime (2131224202049).

It is a junction number, because it is equal to n+sod(n) for n = 2131224201999 and 2131224202017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131224202049) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10716352 + ... + 10913415.

It is an arithmetic number, because the mean of its divisors is an integer number (47239413312).

Almost surely, 2^{2131224202044} is an apocalyptic number.

It is an amenable number.

2131224202044 is an abundant number, since it is smaller than the sum of its proper divisors (4671251314884).

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

2131224202044 is a wasteful number, since it uses less digits than its factorization.

2131224202044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21629824 (or 21629819 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 2131224202044 its reverse (4402024221312), we get a palindrome (6533248423356).

The spelling of 2131224202044 in words is "two trillion, one hundred thirty-one billion, two hundred twenty-four million, two hundred two thousand, forty-four".