121201120122101 has 16 divisors (see below), whose sum is σ = 122551480753968. Its totient is φ = 119852830310400.

The previous prime is 121201120122053. The next prime is 121201120122151. The reversal of 121201120122101 is 101221021102121.

It can be written as a sum of positive squares in 8 ways, for example, as 4030562155876 + 117170557966225 = 2007626^2 + 10824535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201120122101 is a prime.

It is a super-2 number, since 2×121201120122101² (a number of 29 digits) contains 22 as substring.

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 121201120122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201120122151) 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, 3151254011 + ... + 3151292471.

It is an arithmetic number, because the mean of its divisors is an integer number (7659467547123).

Almost surely, 2^{121201120122101} is an apocalyptic number.

It is an amenable number.

121201120122101 is a deficient number, since it is larger than the sum of its proper divisors (1350360631867).

121201120122101 is a wasteful number, since it uses less digits than its factorization.

121201120122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64472.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121201120122101 its reverse (101221021102121), we get a palindrome (222422141224222).

The spelling of 121201120122101 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty million, one hundred twenty-two thousand, one hundred one".