2131421231224 has 8 divisors (see below), whose sum is σ = 3996414808560. Its totient is φ = 1065710615608.

The previous prime is 2131421231221. The next prime is 2131421231227. The reversal of 2131421231224 is 4221321241312.

It is an interprime number because it is at equal distance from previous prime (2131421231221) and next prime (2131421231227).

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2131421231192 and 2131421231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131421231221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133213826944 + ... + 133213826959.

It is an arithmetic number, because the mean of its divisors is an integer number (499551851070).

Almost surely, 2^{2131421231224} is an apocalyptic number.

It is an amenable number.

2131421231224 is a deficient number, since it is larger than the sum of its proper divisors (1864993577336).

2131421231224 is a wasteful number, since it uses less digits than its factorization.

2131421231224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266427653909 (or 266427653905 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 2131421231224 its reverse (4221321241312), we get a palindrome (6352742472536).

The spelling of 2131421231224 in words is "two trillion, one hundred thirty-one billion, four hundred twenty-one million, two hundred thirty-one thousand, two hundred twenty-four".