10121656 has 16 divisors (see below), whose sum is σ = 19803600. Its totient is φ = 4840704.

The previous prime is 10121651. The next prime is 10121677. The reversal of 10121656 is 65612101.

10121656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121651) 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, 27321 + ... + 27688.

It is an arithmetic number, because the mean of its divisors is an integer number (1237725).

Almost surely, 2^10121656 is an apocalyptic number.

It is an amenable number.

10121656 is a deficient number, since it is larger than the sum of its proper divisors (9681944).

10121656 is a wasteful number, since it uses less digits than its factorization.

10121656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55038 (or 55034 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 10121656 is about 3181.4550130404. The cubic root of 10121656 is about 216.3136162196.

Adding to 10121656 its reverse (65612101), we get a palindrome (75733757).

The spelling of 10121656 in words is "ten million, one hundred twenty-one thousand, six hundred fifty-six".