1012002111121 has 4 divisors (see below), whose sum is σ = 1044647340544. Its totient is φ = 979356881700.

The previous prime is 1012002111067. The next prime is 1012002111149. The reversal of 1012002111121 is 1211112002101.

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 1012002111121 - 2¹¹ = 1012002109073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012002111721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16322614665 + ... + 16322614726.

It is an arithmetic number, because the mean of its divisors is an integer number (261161835136).

Almost surely, 2^{1012002111121} is an apocalyptic number.

It is an amenable number.

1012002111121 is a deficient number, since it is larger than the sum of its proper divisors (32645229423).

1012002111121 is an equidigital number, since it uses as much as digits as its factorization.

1012002111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32645229422.

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

Adding to 1012002111121 its reverse (1211112002101), we get a palindrome (2223114113222).

The spelling of 1012002111121 in words is "one trillion, twelve billion, two million, one hundred eleven thousand, one hundred twenty-one".