121002210001 has 4 divisors (see below), whose sum is σ = 121003287552. Its totient is φ = 121001132452.

The previous prime is 121002209953. The next prime is 121002210013. The reversal of 121002210001 is 100012200121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 100012200121 = 23 ⋅4348356527.

It is a cyclic number.

It is not a de Polignac number, because 121002210001 - 2⁷ = 121002209873 is a prime.

It is a super-2 number, since 2×121002210001² (a number of 23 digits) contains 22 as substring.

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 121002210001.

It is not an unprimeable number, because it can be changed into a prime (121002210041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347761 + ... + 602446.

It is an arithmetic number, because the mean of its divisors is an integer number (30250821888).

Almost surely, 2^121002210001 is an apocalyptic number.

It is an amenable number.

121002210001 is a deficient number, since it is larger than the sum of its proper divisors (1077551).

121002210001 is an equidigital number, since it uses as much as digits as its factorization.

121002210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077550.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121002210001 its reverse (100012200121), we get a palindrome (221014410122).

The spelling of 121002210001 in words is "one hundred twenty-one billion, two million, two hundred ten thousand, one".