121020122020121 has 4 divisors (see below), whose sum is σ = 121081027971792. Its totient is φ = 120959216068452.

The previous prime is 121020122020117. The next prime is 121020122020141. The reversal of 121020122020121 is 121020221020121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121020122020121 - 2² = 121020122020117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121020122020121.

It is not an unprimeable number, because it can be changed into a prime (121020122020141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30452972855 + ... + 30452976828.

It is an arithmetic number, because the mean of its divisors is an integer number (30270256992948).

Almost surely, 2^{121020122020121} is an apocalyptic number.

It is an amenable number.

121020122020121 is a deficient number, since it is larger than the sum of its proper divisors (60905951671).

121020122020121 is an equidigital number, since it uses as much as digits as its factorization.

121020122020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60905951670.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121020122020121 its reverse (121020221020121), we get a palindrome (242040343040242).

The spelling of 121020122020121 in words is "one hundred twenty-one trillion, twenty billion, one hundred twenty-two million, twenty thousand, one hundred twenty-one".