2012551320321 has 24 divisors (see below), whose sum is σ = 2937455788800. Its totient is φ = 1327672584576.

The previous prime is 2012551320301. The next prime is 2012551320341. The reversal of 2012551320321 is 1230231552102.

2012551320321 is a `hidden beast` number, since 2 + 0 + 12 + 5 + 5 + 1 + 320 + 321 = 666.

It is an interprime number because it is at equal distance from previous prime (2012551320301) and next prime (2012551320341).

It is not a de Polignac number, because 2012551320321 - 2¹⁵ = 2012551287553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2012551320301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412105 + ... + 2048153.

It is an arithmetic number, because the mean of its divisors is an integer number (122393991200).

Almost surely, 2^{2012551320321} is an apocalyptic number.

It is an amenable number.

2012551320321 is a deficient number, since it is larger than the sum of its proper divisors (924904468479).

2012551320321 is a wasteful number, since it uses less digits than its factorization.

2012551320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637485 (or 1637482 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 2012551320321 its reverse (1230231552102), we get a palindrome (3242782872423).

The spelling of 2012551320321 in words is "two trillion, twelve billion, five hundred fifty-one million, three hundred twenty thousand, three hundred twenty-one".