1012012121 has 16 divisors (see below), whose sum is σ = 1066296960. Its totient is φ = 958636800.

The previous prime is 1012012097. The next prime is 1012012187. The reversal of 1012012121 is 1212102101.

It is a cyclic number.

It is not a de Polignac number, because 1012012121 - 2²⁶ = 944903257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1012012621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1650611 + ... + 1651223.

It is an arithmetic number, because the mean of its divisors is an integer number (66643560).

Almost surely, 2^1012012121 is an apocalyptic number.

It is an amenable number.

1012012121 is a deficient number, since it is larger than the sum of its proper divisors (54284839).

1012012121 is a wasteful number, since it uses less digits than its factorization.

1012012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1012012121 is about 31812.1379507885. The cubic root of 1012012121 is about 1003.9881141353.

Adding to 1012012121 its reverse (1212102101), we get a palindrome (2224114222).

The spelling of 1012012121 in words is "one billion, twelve million, twelve thousand, one hundred twenty-one".