1012210213121 has 4 divisors (see below), whose sum is σ = 1012239793200. Its totient is φ = 1012180633044.

The previous prime is 1012210213093. The next prime is 1012210213127. The reversal of 1012210213121 is 1213120122101.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1012210213121 - 2³⁰ = 1011136471297 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 1012210213121.

It is not an unprimeable number, because it can be changed into a prime (1012210213127) 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, 14738651 + ... + 14807168.

It is an arithmetic number, because the mean of its divisors is an integer number (253059948300).

Almost surely, 2^{1012210213121} is an apocalyptic number.

It is an amenable number.

1012210213121 is a deficient number, since it is larger than the sum of its proper divisors (29580079).

1012210213121 is an equidigital number, since it uses as much as digits as its factorization.

1012210213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29580078.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1012210213121 its reverse (1213120122101), we get a palindrome (2225330335222).

The spelling of 1012210213121 in words is "one trillion, twelve billion, two hundred ten million, two hundred thirteen thousand, one hundred twenty-one".