121121202111121 has 8 divisors (see below), whose sum is σ = 121187915659584. Its totient is φ = 121054490892720.

The previous prime is 121121202111079. The next prime is 121121202111139. The reversal of 121121202111121 is 121111202121121.

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-121121202111121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121202151121) 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, 109085076 + ... + 110189818.

It is an arithmetic number, because the mean of its divisors is an integer number (15148489457448).

Almost surely, 2^{121121202111121} is an apocalyptic number.

It is an amenable number.

121121202111121 is a deficient number, since it is larger than the sum of its proper divisors (66713548463).

121121202111121 is a wasteful number, since it uses less digits than its factorization.

121121202111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165031.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121121202111121 its reverse (121111202121121), we get a palindrome (242232404232242).

The spelling of 121121202111121 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred two million, one hundred eleven thousand, one hundred twenty-one".