2012011311321 has 24 divisors (see below), whose sum is σ = 3173301069120. Its totient is φ = 1218301178400.

The previous prime is 2012011311319. The next prime is 2012011311337. The reversal of 2012011311321 is 1231131102102.

2012011311321 is a `hidden beast` number, since 2 + 0 + 1 + 20 + 11 + 311 + 321 = 666.

It is not a de Polignac number, because 2012011311321 - 2¹ = 2012011311319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012011311294 and 2012011311303.

It is not an unprimeable number, because it can be changed into a prime (2012011311301) 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, 9053125 + ... + 9272706.

It is an arithmetic number, because the mean of its divisors is an integer number (132220877880).

Almost surely, 2^{2012011311321} is an apocalyptic number.

It is an amenable number.

2012011311321 is a deficient number, since it is larger than the sum of its proper divisors (1161289757799).

2012011311321 is a wasteful number, since it uses less digits than its factorization.

2012011311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18326957 (or 18326954 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2012011311321 its reverse (1231131102102), we get a palindrome (3243142413423).

The spelling of 2012011311321 in words is "two trillion, twelve billion, eleven million, three hundred eleven thousand, three hundred twenty-one".