121113213101 has 8 divisors (see below), whose sum is σ = 128483666424. Its totient is φ = 113770109440.

The previous prime is 121113213083. The next prime is 121113213121. The reversal of 121113213101 is 101312311121.

It can be written as a sum of positive squares in 4 ways, for example, as 763195876 + 120350017225 = 27626^2 + 346915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121113213101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 121113213101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113213121) 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, 6828290 + ... + 6846003.

It is an arithmetic number, because the mean of its divisors is an integer number (16060458303).

Almost surely, 2^121113213101 is an apocalyptic number.

It is an amenable number.

121113213101 is a deficient number, since it is larger than the sum of its proper divisors (7370453323).

121113213101 is a wasteful number, since it uses less digits than its factorization.

121113213101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13674831.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 121113213101 its reverse (101312311121), we get a palindrome (222425524222).

The spelling of 121113213101 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred thirteen thousand, one hundred one".