2021021212001 has 4 divisors (see below), whose sum is σ = 2204750413104. Its totient is φ = 1837292010900.

The previous prime is 2021021211977. The next prime is 2021021212069. The reversal of 2021021212001 is 1002121201202.

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 2021021212001 - 2³⁴ = 2003841342817 is a prime.

It is a super-3 number, since 3×2021021212001³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021021202001) 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, 91864600535 + ... + 91864600556.

It is an arithmetic number, because the mean of its divisors is an integer number (551187603276).

Almost surely, 2^{2021021212001} is an apocalyptic number.

It is an amenable number.

2021021212001 is a deficient number, since it is larger than the sum of its proper divisors (183729201103).

2021021212001 is a wasteful number, since it uses less digits than its factorization.

2021021212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183729201102.

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

Adding to 2021021212001 its reverse (1002121201202), we get a palindrome (3023142413203).

The spelling of 2021021212001 in words is "two trillion, twenty-one billion, twenty-one million, two hundred twelve thousand, one".