121031332221 has 16 divisors (see below), whose sum is σ = 165335119488. Its totient is φ = 78730982400.

The previous prime is 121031332183. The next prime is 121031332231. The reversal of 121031332221 is 122233130121.

It is not a de Polignac number, because 121031332221 - 2⁶ = 121031332157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031332231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2908320 + ... + 2949641.

It is an arithmetic number, because the mean of its divisors is an integer number (10333444968).

Almost surely, 2^121031332221 is an apocalyptic number.

It is an amenable number.

121031332221 is a deficient number, since it is larger than the sum of its proper divisors (44303787267).

121031332221 is an equidigital number, since it uses as much as digits as its factorization.

121031332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5858132.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121031332221 its reverse (122233130121), we get a palindrome (243264462342).

The spelling of 121031332221 in words is "one hundred twenty-one billion, thirty-one million, three hundred thirty-two thousand, two hundred twenty-one".