2231015121 has 12 divisors (see below), whose sum is σ = 3229923840. Its totient is φ = 1483952760.

The previous prime is 2231015117. The next prime is 2231015141. The reversal of 2231015121 is 1215101322.

2231015121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2231015121 - 2² = 2231015117 is a prime.

It is a super-3 number, since 3×2231015121³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231015094 and 2231015103.

It is not an unprimeable number, because it can be changed into a prime (2231015141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278385 + ... + 286286.

It is an arithmetic number, because the mean of its divisors is an integer number (269160320).

Almost surely, 2^2231015121 is an apocalyptic number.

It is an amenable number.

2231015121 is a deficient number, since it is larger than the sum of its proper divisors (998908719).

2231015121 is a wasteful number, since it uses less digits than its factorization.

2231015121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565116 (or 565113 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2231015121 is about 47233.6227808116. The cubic root of 2231015121 is about 1306.6747670246.

Adding to 2231015121 its reverse (1215101322), we get a palindrome (3446116443).

The spelling of 2231015121 in words is "two billion, two hundred thirty-one million, fifteen thousand, one hundred twenty-one".