12101072 has 20 divisors (see below), whose sum is σ = 24080676. Its totient is φ = 5886720.

The previous prime is 12101053. The next prime is 12101087. The reversal of 12101072 is 27010121.

It can be written as a sum of positive squares in 2 ways, for example, as 10523536 + 1577536 = 3244^2 + 1256^2 .

It is a super-3 number, since 3×12101072³ (a number of 22 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9629 + ... + 10812.

Almost surely, 2^12101072 is an apocalyptic number.

It is an amenable number.

12101072 is a deficient number, since it is larger than the sum of its proper divisors (11979604).

12101072 is a wasteful number, since it uses less digits than its factorization.

12101072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20486 (or 20480 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 12101072 is about 3478.6595119385. The cubic root of 12101072 is about 229.5838220622.

Adding to 12101072 its reverse (27010121), we get a palindrome (39111193).

The spelling of 12101072 in words is "twelve million, one hundred one thousand, seventy-two".