212031210131021 has 8 divisors (see below), whose sum is σ = 212150839449888. Its totient is φ = 211911583630000.

The previous prime is 212031210131003. The next prime is 212031210131053. The reversal of 212031210131021 is 120131012130212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212031210131021 - 2³⁸ = 211756332224077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212031210130984 and 212031210131002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212031210131921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160177571 + ... + 161495871.

It is an arithmetic number, because the mean of its divisors is an integer number (26518854931236).

Almost surely, 2^{212031210131021} is an apocalyptic number.

It is an amenable number.

212031210131021 is a deficient number, since it is larger than the sum of its proper divisors (119629318867).

212031210131021 is a wasteful number, since it uses less digits than its factorization.

212031210131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408923.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 212031210131021 its reverse (120131012130212), we get a palindrome (332162222261233).

The spelling of 212031210131021 in words is "two hundred twelve trillion, thirty-one billion, two hundred ten million, one hundred thirty-one thousand, twenty-one".