2133213401021 has 4 divisors (see below), whose sum is σ = 2133224819100. Its totient is φ = 2133201982944.

The previous prime is 2133213400963. The next prime is 2133213401083. The reversal of 2133213401021 is 1201043123312.

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 1613928864025 + 519284536996 = 1270405^2 + 720614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133213401021 - 2⁶ = 2133213400957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133213406021) 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, 5424056 + ... + 5804033.

It is an arithmetic number, because the mean of its divisors is an integer number (533306204775).

Almost surely, 2^{2133213401021} is an apocalyptic number.

It is an amenable number.

2133213401021 is a deficient number, since it is larger than the sum of its proper divisors (11418079).

2133213401021 is a wasteful number, since it uses less digits than its factorization.

2133213401021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11418078.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2133213401021 its reverse (1201043123312), we get a palindrome (3334256524333).

The spelling of 2133213401021 in words is "two trillion, one hundred thirty-three billion, two hundred thirteen million, four hundred one thousand, twenty-one".