32121231121 has 12 divisors (see below), whose sum is σ = 37372749732. Its totient is φ = 27527152128.

The previous prime is 32121231119. The next prime is 32121231193. The reversal of 32121231121 is 12113212123.

It can be written as a sum of positive squares in 2 ways, for example, as 15490291600 + 16630939521 = 124460^2 + 128961^2 .

It is not a de Polignac number, because 32121231121 - 2¹ = 32121231119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32121231721) 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, 203481 + ... + 325033.

It is an arithmetic number, because the mean of its divisors is an integer number (3114395811).

Almost surely, 2^32121231121 is an apocalyptic number.

It is an amenable number.

32121231121 is a deficient number, since it is larger than the sum of its proper divisors (5251518611).

32121231121 is a wasteful number, since it uses less digits than its factorization.

32121231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126960 (or 126953 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 32121231121 its reverse (12113212123), we get a palindrome (44234443244).

The spelling of 32121231121 in words is "thirty-two billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred twenty-one".