11921012 has 12 divisors (see below), whose sum is σ = 22089060. Its totient is φ = 5609856.

The previous prime is 11920991. The next prime is 11921017. The reversal of 11921012 is 21012911.

It can be written as a sum of positive squares in 2 ways, for example, as 5740816 + 6180196 = 2396^2 + 2486^2 .

It is a super-2 number, since 2×11921012² = 284221054208288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11921017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87587 + ... + 87722.

It is an arithmetic number, because the mean of its divisors is an integer number (1840755).

Almost surely, 2^11921012 is an apocalyptic number.

It is an amenable number.

11921012 is a deficient number, since it is larger than the sum of its proper divisors (10168048).

11921012 is a wasteful number, since it uses less digits than its factorization.

11921012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175330 (or 175328 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 11921012 is about 3452.6818561808. The cubic root of 11921012 is about 228.4394162556.

Adding to 11921012 its reverse (21012911), we get a palindrome (32933923).

The spelling of 11921012 in words is "eleven million, nine hundred twenty-one thousand, twelve".