10121012121 has 16 divisors (see below), whose sum is σ = 14809632768. Its totient is φ = 6097213200.

The previous prime is 10121012119. The next prime is 10121012147. The reversal of 10121012121 is 12121012101.

10121012121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 10121012121 - 2¹ = 10121012119 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 10121012097 and 10121012106.

It is not an unprimeable number, because it can be changed into a prime (10121012521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912745 + ... + 923766.

It is an arithmetic number, because the mean of its divisors is an integer number (925602048).

Almost surely, 2^10121012121 is an apocalyptic number.

10121012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10121012121 is a deficient number, since it is larger than the sum of its proper divisors (4688620647).

10121012121 is a wasteful number, since it uses less digits than its factorization.

10121012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836692.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10121012121 its reverse (12121012101), we get a palindrome (22242024222).

The spelling of 10121012121 in words is "ten billion, one hundred twenty-one million, twelve thousand, one hundred twenty-one".