10212200121 has 4 divisors (see below), whose sum is σ = 13616266832. Its totient is φ = 6808133412.

The previous prime is 10212200111. The next prime is 10212200143. The reversal of 10212200121 is 12100221201.

10212200121 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 10212200121 - 2⁷ = 10212199993 is a prime.

It is a super-2 number, since 2×10212200121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212200097 and 10212200106.

It is not an unprimeable number, because it can be changed into a prime (10212200111) 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, 1702033351 + ... + 1702033356.

It is an arithmetic number, because the mean of its divisors is an integer number (3404066708).

Almost surely, 2^10212200121 is an apocalyptic number.

It is an amenable number.

10212200121 is a deficient number, since it is larger than the sum of its proper divisors (3404066711).

10212200121 is an equidigital number, since it uses as much as digits as its factorization.

10212200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404066710.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10212200121 its reverse (12100221201), we get a palindrome (22312421322).

The spelling of 10212200121 in words is "ten billion, two hundred twelve million, two hundred thousand, one hundred twenty-one".