1001212201323 has 24 divisors (see below), whose sum is σ = 1522351185680. Its totient is φ = 632327834880.

The previous prime is 1001212201321. The next prime is 1001212201391. The reversal of 1001212201323 is 3231022121001.

1001212201323 is a `hidden beast` number, since 1 + 0 + 0 + 121 + 220 + 1 + 323 = 666.

It is not a de Polignac number, because 1001212201323 - 2¹ = 1001212201321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001212201296 and 1001212201305.

It is not an unprimeable number, because it can be changed into a prime (1001212201321) 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, 11221215 + ... + 11310087.

Almost surely, 2^{1001212201323} is an apocalyptic number.

1001212201323 is a deficient number, since it is larger than the sum of its proper divisors (521138984357).

1001212201323 is a wasteful number, since it uses less digits than its factorization.

1001212201323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154779 (or 154776 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1001212201323 its reverse (3231022121001), we get a palindrome (4232234322324).

The spelling of 1001212201323 in words is "one trillion, one billion, two hundred twelve million, two hundred one thousand, three hundred twenty-three".