11451331020212 has 12 divisors (see below), whose sum is σ = 20047270755876. Its totient is φ = 5723539375680.

The previous prime is 11451331020209. The next prime is 11451331020229. The reversal of 11451331020212 is 21202013315411.

It can be written as a sum of positive squares in 2 ways, for example, as 8793146424976 + 2658184595236 = 2965324^2 + 1630394^2 .

It is a super-2 number, since 2×11451331020212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531521489 + ... + 531543032.

It is an arithmetic number, because the mean of its divisors is an integer number (1670605896323).

Almost surely, 2^{11451331020212} is an apocalyptic number.

It is an amenable number.

11451331020212 is a deficient number, since it is larger than the sum of its proper divisors (8595939735664).

11451331020212 is a wasteful number, since it uses less digits than its factorization.

11451331020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063067218 (or 1063067216 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 11451331020212 its reverse (21202013315411), we get a palindrome (32653344335623).

The spelling of 11451331020212 in words is "eleven trillion, four hundred fifty-one billion, three hundred thirty-one million, twenty thousand, two hundred twelve".