121031002211221 has 8 divisors (see below), whose sum is σ = 127406948950080. Its totient is φ = 114655644871488.

The previous prime is 121031002211191. The next prime is 121031002211237. The reversal of 121031002211221 is 122112200130121.

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-121031002211221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031002211291) 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, 146928241 + ... + 147749686.

It is an arithmetic number, because the mean of its divisors is an integer number (15925868618760).

Almost surely, 2^{121031002211221} is an apocalyptic number.

It is an amenable number.

121031002211221 is a deficient number, since it is larger than the sum of its proper divisors (6375946738859).

121031002211221 is a wasteful number, since it uses less digits than its factorization.

121031002211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294699563.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 121031002211221 its reverse (122112200130121), we get a palindrome (243143202341342).

The spelling of 121031002211221 in words is "one hundred twenty-one trillion, thirty-one billion, two million, two hundred eleven thousand, two hundred twenty-one".