121011022121 has 8 divisors (see below), whose sum is σ = 132775101504. Its totient is φ = 109374122320.

The previous prime is 121011022117. The next prime is 121011022141. The reversal of 121011022121 is 121220110121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121011022121 - 2² = 121011022117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121011022096 and 121011022105.

It is not an unprimeable number, because it can be changed into a prime (121011022141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31792901 + ... + 31796706.

It is an arithmetic number, because the mean of its divisors is an integer number (16596887688).

Almost surely, 2^121011022121 is an apocalyptic number.

121011022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121011022121 is a deficient number, since it is larger than the sum of its proper divisors (11764079383).

121011022121 is a wasteful number, since it uses less digits than its factorization.

121011022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63589791.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121011022121 its reverse (121220110121), we get a palindrome (242231132242).

The spelling of 121011022121 in words is "one hundred twenty-one billion, eleven million, twenty-two thousand, one hundred twenty-one".