121101321 has 16 divisors (see below), whose sum is σ = 178130880. Its totient is φ = 72568320.

The previous prime is 121101317. The next prime is 121101329. The reversal of 121101321 is 123101121.

It is not a de Polignac number, because 121101321 - 2² = 121101317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121101297 and 121101306.

It is not an unprimeable number, because it can be changed into a prime (121101329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17680 + ... + 23553.

It is an arithmetic number, because the mean of its divisors is an integer number (11133180).

Almost surely, 2^121101321 is an apocalyptic number.

121101321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121101321 is a deficient number, since it is larger than the sum of its proper divisors (57029559).

121101321 is a wasteful number, since it uses less digits than its factorization.

121101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41336.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 121101321 is about 11004.6045362839. The cubic root of 121101321 is about 494.7467616007.

Adding to 121101321 its reverse (123101121), we get a palindrome (244202442).

It can be divided in two parts, 12110 and 1321, that added together give a palindrome (13431).

The spelling of 121101321 in words is "one hundred twenty-one million, one hundred one thousand, three hundred twenty-one".