1012002012205 has 4 divisors (see below), whose sum is σ = 1214402414652. Its totient is φ = 809601609760.

The previous prime is 1012002012139. The next prime is 1012002012223. The reversal of 1012002012205 is 5022102002101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 633366080649 + 378635931556 = 795843^2 + 615334^2 .

It is not a de Polignac number, because 1012002012205 - 2²⁹ = 1011465141293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101200201216 + ... + 101200201225.

It is an arithmetic number, because the mean of its divisors is an integer number (303600603663).

Almost surely, 2^{1012002012205} is an apocalyptic number.

It is an amenable number.

1012002012205 is a deficient number, since it is larger than the sum of its proper divisors (202400402447).

1012002012205 is an equidigital number, since it uses as much as digits as its factorization.

1012002012205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202400402446.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 1012002012205 its reverse (5022102002101), we get a palindrome (6034104014306).

The spelling of 1012002012205 in words is "one trillion, twelve billion, two million, twelve thousand, two hundred five".