121003111010121 has 16 divisors (see below), whose sum is σ = 168352863281280. Its totient is φ = 77161079240960.

The previous prime is 121003111010083. The next prime is 121003111010129. The reversal of 121003111010121 is 121010111300121.

It is a cyclic number.

It is not a de Polignac number, because 121003111010121 - 2¹⁹ = 121003110485833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121003111010121.

It is not an unprimeable number, because it can be changed into a prime (121003111010129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13382995 + ... + 20520983.

It is an arithmetic number, because the mean of its divisors is an integer number (10522053955080).

Almost surely, 2^{121003111010121} is an apocalyptic number.

It is an amenable number.

121003111010121 is a deficient number, since it is larger than the sum of its proper divisors (47349752271159).

121003111010121 is a wasteful number, since it uses less digits than its factorization.

121003111010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7383696.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 121003111010121 its reverse (121010111300121), we get a palindrome (242013222310242).

The spelling of 121003111010121 in words is "one hundred twenty-one trillion, three billion, one hundred eleven million, ten thousand, one hundred twenty-one".