1012312203121 has 16 divisors (see below), whose sum is σ = 1048476441600. Its totient is φ = 976232432448.

The previous prime is 1012312203059. The next prime is 1012312203139. The reversal of 1012312203121 is 1213022132101.

It is a cyclic number.

It is not a de Polignac number, because 1012312203121 - 2²⁹ = 1011775332209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012312203421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167404320 + ... + 167410366.

It is an arithmetic number, because the mean of its divisors is an integer number (65529777600).

Almost surely, 2^{1012312203121} is an apocalyptic number.

It is an amenable number.

1012312203121 is a deficient number, since it is larger than the sum of its proper divisors (36164238479).

1012312203121 is a wasteful number, since it uses less digits than its factorization.

1012312203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12048.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1012312203121 its reverse (1213022132101), we get a palindrome (2225334335222).

The spelling of 1012312203121 in words is "one trillion, twelve billion, three hundred twelve million, two hundred three thousand, one hundred twenty-one".