121002121120101 has 32 divisors (see below), whose sum is σ = 174115618467840. Its totient is φ = 74304859809984.

The previous prime is 121002121120099. The next prime is 121002121120123. The reversal of 121002121120101 is 101021121200121.

It is a happy number.

It is not a de Polignac number, because 121002121120101 - 2¹ = 121002121120099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002121120141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36753706 + ... + 39910388.

It is an arithmetic number, because the mean of its divisors is an integer number (5441113077120).

Almost surely, 2^{121002121120101} is an apocalyptic number.

It is an amenable number.

121002121120101 is a deficient number, since it is larger than the sum of its proper divisors (53113497347739).

121002121120101 is a wasteful number, since it uses less digits than its factorization.

121002121120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158785.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121002121120101 its reverse (101021121200121), we get a palindrome (222023242320222).

The spelling of 121002121120101 in words is "one hundred twenty-one trillion, two billion, one hundred twenty-one million, one hundred twenty thousand, one hundred one".