121121012121121 has 8 divisors (see below), whose sum is σ = 124078458407904. Its totient is φ = 118169960314560.

The previous prime is 121121012121037. The next prime is 121121012121167. The reversal of 121121012121121 is 121121210121121.

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 121121012121121 - 2²³ = 121121003732513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121012121191) 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, 1598581711 + ... + 1598657476.

It is an arithmetic number, because the mean of its divisors is an integer number (15509807300988).

Almost surely, 2^{121121012121121} is an apocalyptic number.

It is an amenable number.

121121012121121 is a deficient number, since it is larger than the sum of its proper divisors (2957446286783).

121121012121121 is an equidigital number, since it uses as much as digits as its factorization.

121121012121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197240111.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121121012121121 its reverse (121121210121121), we get a palindrome (242242222242242).

The spelling of 121121012121121 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twelve million, one hundred twenty-one thousand, one hundred twenty-one".