121022121 has 32 divisors (see below), whose sum is σ = 179481600. Its totient is φ = 71928000.

The previous prime is 121022117. The next prime is 121022129. The reversal of 121022121 is 121220121.

It is not a de Polignac number, because 121022121 - 2² = 121022117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121022097 and 121022106.

It is not an unprimeable number, because it can be changed into a prime (121022129) 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, 742386 + ... + 742548.

It is an arithmetic number, because the mean of its divisors is an integer number (5608800).

Almost surely, 2^121022121 is an apocalyptic number.

121022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121022121 is a deficient number, since it is larger than the sum of its proper divisors (58459479).

121022121 is a wasteful number, since it uses less digits than its factorization.

121022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 121022121 is about 11001.0054540483. The cubic root of 121022121 is about 494.6388836454.

Adding to 121022121 its reverse (121220121), we get a palindrome (242242242).

The spelling of 121022121 in words is "one hundred twenty-one million, twenty-two thousand, one hundred twenty-one".