2012103121 has 6 divisors (see below), whose sum is σ = 2340609810. Its totient is φ = 1724659776.

The previous prime is 2012103109. The next prime is 2012103127. The reversal of 2012103121 is 1213012102.

It can be written as a sum of positive squares in only one way, i.e., 1576963521 + 435139600 = 39711^2 + 20860^2 .

It is not a de Polignac number, because 2012103121 - 2⁷ = 2012102993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2012103127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20531616 + ... + 20531713.

It is an arithmetic number, because the mean of its divisors is an integer number (390101635).

Almost surely, 2^2012103121 is an apocalyptic number.

It is an amenable number.

2012103121 is a deficient number, since it is larger than the sum of its proper divisors (328506689).

2012103121 is an equidigital number, since it uses as much as digits as its factorization.

2012103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41063343 (or 41063336 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2012103121 is about 44856.4724538165. The cubic root of 2012103121 is about 1262.4574365417.

Adding to 2012103121 its reverse (1213012102), we get a palindrome (3225115223).

The spelling of 2012103121 in words is "two billion, twelve million, one hundred three thousand, one hundred twenty-one".