121321101 has 32 divisors (see below), whose sum is σ = 180182016. Its totient is φ = 72000000.

The previous prime is 121321097. The next prime is 121321127. The reversal of 121321101 is 101123121.

It is not a de Polignac number, because 121321101 - 2² = 121321097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 483226 + ... + 483476.

It is an arithmetic number, because the mean of its divisors is an integer number (5630688).

Almost surely, 2^121321101 is an apocalyptic number.

121321101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121321101 is a deficient number, since it is larger than the sum of its proper divisors (58860915).

121321101 is a wasteful number, since it uses less digits than its factorization.

121321101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513.

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

The square root of 121321101 is about 11014.5858297078. The cubic root of 121321101 is about 495.0458767805.

Adding to 121321101 its reverse (101123121), we get a palindrome (222444222).

The spelling of 121321101 in words is "one hundred twenty-one million, three hundred twenty-one thousand, one hundred one".