2012312323021 has 72 divisors (see below), whose sum is σ = 2780503715808. Its totient is φ = 1439408880000.

The previous prime is 2012312323019. The next prime is 2012312323079. The reversal of 2012312323021 is 1203232132102.

It is not a de Polignac number, because 2012312323021 - 2¹ = 2012312323019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012312322983 and 2012312323001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012312327021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16426446 + ... + 16548496.

It is an arithmetic number, because the mean of its divisors is an integer number (38618107164).

Almost surely, 2^{2012312323021} is an apocalyptic number.

It is an amenable number.

2012312323021 is a deficient number, since it is larger than the sum of its proper divisors (768191392787).

2012312323021 is a wasteful number, since it uses less digits than its factorization.

2012312323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122283 (or 122263 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2012312323021 its reverse (1203232132102), we get a palindrome (3215544455123).

It can be divided in two parts, 201231 and 2323021, that added together give a palindrome (2524252).

The spelling of 2012312323021 in words is "two trillion, twelve billion, three hundred twelve million, three hundred twenty-three thousand, twenty-one".