121023012121 has 16 divisors (see below), whose sum is σ = 140648937408. Its totient is φ = 102913804800.

The previous prime is 121023012109. The next prime is 121023012133. The reversal of 121023012121 is 121210320121.

It is an interprime number because it is at equal distance from previous prime (121023012109) and next prime (121023012133).

It is a cyclic number.

It is not a de Polignac number, because 121023012121 - 2⁹ = 121023011609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121023012095 and 121023012104.

It is not an unprimeable number, because it can be changed into a prime (121023012151) 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 15 ways as a sum of consecutive naturals, for example, 1954740 + ... + 2015701.

It is an arithmetic number, because the mean of its divisors is an integer number (8790558588).

Almost surely, 2^121023012121 is an apocalyptic number.

121023012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121023012121 is a deficient number, since it is larger than the sum of its proper divisors (19625925287).

121023012121 is a wasteful number, since it uses less digits than its factorization.

121023012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970632.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121023012121 its reverse (121210320121), we get a palindrome (242233332242).

The spelling of 121023012121 in words is "one hundred twenty-one billion, twenty-three million, twelve thousand, one hundred twenty-one".