1012201110121 has 4 divisors (see below), whose sum is σ = 1029357061200. Its totient is φ = 995045159044.

The previous prime is 1012201110119. The next prime is 1012201110133. The reversal of 1012201110121 is 1210111022101.

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 1012201110121 - 2¹ = 1012201110119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012201110181) 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, 8577975451 + ... + 8577975568.

It is an arithmetic number, because the mean of its divisors is an integer number (257339265300).

Almost surely, 2^{1012201110121} is an apocalyptic number.

It is an amenable number.

1012201110121 is a deficient number, since it is larger than the sum of its proper divisors (17155951079).

1012201110121 is an equidigital number, since it uses as much as digits as its factorization.

1012201110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17155951078.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1012201110121 its reverse (1210111022101), we get a palindrome (2222312132222).

The spelling of 1012201110121 in words is "one trillion, twelve billion, two hundred one million, one hundred ten thousand, one hundred twenty-one".