10121053857 has 4 divisors (see below), whose sum is σ = 13494738480. Its totient is φ = 6747369236.

The previous prime is 10121053841. The next prime is 10121053861. The reversal of 10121053857 is 75835012101.

10121053857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10121053857 - 2⁴ = 10121053841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10121053807) 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, 1686842307 + ... + 1686842312.

It is an arithmetic number, because the mean of its divisors is an integer number (3373684620).

Almost surely, 2^10121053857 is an apocalyptic number.

It is an amenable number.

10121053857 is a deficient number, since it is larger than the sum of its proper divisors (3373684623).

10121053857 is an equidigital number, since it uses as much as digits as its factorization.

10121053857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373684622.

The product of its (nonzero) digits is 8400, while the sum is 33.

Adding to 10121053857 its reverse (75835012101), we get a palindrome (85956065958).

The spelling of 10121053857 in words is "ten billion, one hundred twenty-one million, fifty-three thousand, eight hundred fifty-seven".