1012002212021 has 4 divisors (see below), whose sum is σ = 1036685192844. Its totient is φ = 987319231200.

The previous prime is 1012002212003. The next prime is 1012002212033. The reversal of 1012002212021 is 1202122002101.

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 344040902500 + 667961309521 = 586550^2 + 817289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012002212021 - 2³⁸ = 737124305077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012002211987 and 1012002212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012002212041) 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, 12341490350 + ... + 12341490431.

It is an arithmetic number, because the mean of its divisors is an integer number (259171298211).

Almost surely, 2^{1012002212021} is an apocalyptic number.

It is an amenable number.

1012002212021 is a deficient number, since it is larger than the sum of its proper divisors (24682980823).

1012002212021 is an equidigital number, since it uses as much as digits as its factorization.

1012002212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24682980822.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1012002212021 its reverse (1202122002101), we get a palindrome (2214124214122).

The spelling of 1012002212021 in words is "one trillion, twelve billion, two million, two hundred twelve thousand, twenty-one".