12121002202101 has 32 divisors (see below), whose sum is σ = 17473802105088. Its totient is φ = 7429389434880.

The previous prime is 12121002202087. The next prime is 12121002202159. The reversal of 12121002202101 is 10120220012121.

It is not a de Polignac number, because 12121002202101 - 2⁶ = 12121002202037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121002202171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126713071 + ... + 126808691.

It is an arithmetic number, because the mean of its divisors is an integer number (546056315784).

Almost surely, 2^{12121002202101} is an apocalyptic number.

It is an amenable number.

12121002202101 is a deficient number, since it is larger than the sum of its proper divisors (5352799902987).

12121002202101 is a wasteful number, since it uses less digits than its factorization.

12121002202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108541.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12121002202101 its reverse (10120220012121), we get a palindrome (22241222214222).

The spelling of 12121002202101 in words is "twelve trillion, one hundred twenty-one billion, two million, two hundred two thousand, one hundred one".