121102302002021 has 4 divisors (see below), whose sum is σ = 121107952296492. Its totient is φ = 121096651707552.

The previous prime is 121102302001943. The next prime is 121102302002039. The reversal of 121102302002021 is 120200203201121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39025696173025 + 82076605828996 = 6247055^2 + 9059614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121102302002021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102302002921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2825115086 + ... + 2825157951.

It is an arithmetic number, because the mean of its divisors is an integer number (30276988074123).

Almost surely, 2^{121102302002021} is an apocalyptic number.

It is an amenable number.

121102302002021 is a deficient number, since it is larger than the sum of its proper divisors (5650294471).

121102302002021 is an equidigital number, since it uses as much as digits as its factorization.

121102302002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650294470.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121102302002021 its reverse (120200203201121), we get a palindrome (241302505203142).

The spelling of 121102302002021 in words is "one hundred twenty-one trillion, one hundred two billion, three hundred two million, two thousand, twenty-one".