121012122121 has 8 divisors (see below), whose sum is σ = 138961288800. Its totient is φ = 104220966240.

The previous prime is 121012122109. The next prime is 121012122137. The reversal of 121012122121 is 121221210121.

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 121012122121 - 2⁵ = 121012122089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121012122095 and 121012122104.

It is not an unprimeable number, because it can be changed into a prime (121012122151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289502476 + ... + 289502893.

It is an arithmetic number, because the mean of its divisors is an integer number (17370161100).

Almost surely, 2^121012122121 is an apocalyptic number.

121012122121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121012122121 is a deficient number, since it is larger than the sum of its proper divisors (17949166679).

121012122121 is a wasteful number, since it uses less digits than its factorization.

121012122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579005399.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121012122121 its reverse (121221210121), we get a palindrome (242233332242).

The spelling of 121012122121 in words is "one hundred twenty-one billion, twelve million, one hundred twenty-two thousand, one hundred twenty-one".