1030112212121 has 4 divisors (see below), whose sum is σ = 1047571741200. Its totient is φ = 1012652683044.

The previous prime is 1030112212099. The next prime is 1030112212133. The reversal of 1030112212121 is 1212122110301.

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 1030112212121 - 2⁶ = 1030112212057 is a prime.

It is a super-2 number, since 2×1030112212121² (a number of 25 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 1030112212121.

It is not an unprimeable number, because it can be changed into a prime (1030112212321) 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, 8729764451 + ... + 8729764568.

It is an arithmetic number, because the mean of its divisors is an integer number (261892935300).

Almost surely, 2^{1030112212121} is an apocalyptic number.

It is an amenable number.

1030112212121 is a deficient number, since it is larger than the sum of its proper divisors (17459529079).

1030112212121 is an equidigital number, since it uses as much as digits as its factorization.

1030112212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17459529078.

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

Adding to 1030112212121 its reverse (1212122110301), we get a palindrome (2242234322422).

It can be divided in two parts, 103011 and 2212121, that added together give a palindrome (2315132).

The spelling of 1030112212121 in words is "one trillion, thirty billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-one".