121002210022121 has 8 divisors (see below), whose sum is σ = 121388136222600. Its totient is φ = 120616442811648.

The previous prime is 121002210022117. The next prime is 121002210022139. The reversal of 121002210022121 is 121220012200121.

It can be written as a sum of positive squares in 4 ways, for example, as 17970859032025 + 103031350990096 = 4239205^2 + 10150436^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 121002210022121 - 2² = 121002210022117 is a prime.

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 121002210022121.

It is not an unprimeable number, because it can be changed into a prime (121002210022171) 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, 38222846 + ... + 41267303.

It is an arithmetic number, because the mean of its divisors is an integer number (15173517027825).

Almost surely, 2^{121002210022121} is an apocalyptic number.

It is an amenable number.

121002210022121 is a deficient number, since it is larger than the sum of its proper divisors (385926200479).

121002210022121 is an equidigital number, since it uses as much as digits as its factorization.

121002210022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79495003.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121002210022121 its reverse (121220012200121), we get a palindrome (242222222222242).

The spelling of 121002210022121 in words is "one hundred twenty-one trillion, two billion, two hundred ten million, twenty-two thousand, one hundred twenty-one".