10200101212121 has 4 divisors (see below), whose sum is σ = 10213365323700. Its totient is φ = 10186837100544.

The previous prime is 10200101212117. The next prime is 10200101212141. The reversal of 10200101212121 is 12121210100201.

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 4147886196496 + 6052215015625 = 2036636^2 + 2460125^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200101212121 - 2² = 10200101212117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10200101212096 and 10200101212105.

It is not an unprimeable number, because it can be changed into a prime (10200101212141) 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, 6632054636 + ... + 6632056173.

It is an arithmetic number, because the mean of its divisors is an integer number (2553341330925).

Almost surely, 2^{10200101212121} is an apocalyptic number.

It is an amenable number.

10200101212121 is a deficient number, since it is larger than the sum of its proper divisors (13264111579).

10200101212121 is an equidigital number, since it uses as much as digits as its factorization.

10200101212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13264111578.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10200101212121 its reverse (12121210100201), we get a palindrome (22321311312322).

The spelling of 10200101212121 in words is "ten trillion, two hundred billion, one hundred one million, two hundred twelve thousand, one hundred twenty-one".