2231121152 has 36 divisors (see below), whose sum is σ = 4796113140. Its totient is φ = 1029746688.

The previous prime is 2231121143. The next prime is 2231121197. The reversal of 2231121152 is 2511211322.

It can be written as a sum of positive squares in 2 ways, for example, as 1117163776 + 1113957376 = 33424^2 + 33376^2 .

It is a super-3 number, since 3×2231121152³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331877 + ... + 338532.

It is an arithmetic number, because the mean of its divisors is an integer number (133225365).

Almost surely, 2^2231121152 is an apocalyptic number.

It is an amenable number.

2231121152 is an abundant number, since it is smaller than the sum of its proper divisors (2564991988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231121152 is an equidigital number, since it uses as much as digits as its factorization.

2231121152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670438 (or 670424 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 2231121152 is about 47234.7451776761. The cubic root of 2231121152 is about 1306.6954669944.

Adding to 2231121152 its reverse (2511211322), we get a palindrome (4742332474).

It can be divided in two parts, 223112 and 1152, that multiplied together give a square (257025024 = 16032²).

The spelling of 2231121152 in words is "two billion, two hundred thirty-one million, one hundred twenty-one thousand, one hundred fifty-two".