212011221001021 has 8 divisors (see below), whose sum is σ = 229009564311584. Its totient is φ = 195111418811760.

The previous prime is 212011221001007. The next prime is 212011221001033. The reversal of 212011221001021 is 120100122110212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212011221001021 - 2³⁵ = 211976861262653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212011221000986 and 212011221001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011221001061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24635275851 + ... + 24635284456.

It is an arithmetic number, because the mean of its divisors is an integer number (28626195538948).

Almost surely, 2^{212011221001021} is an apocalyptic number.

It is an amenable number.

212011221001021 is a deficient number, since it is larger than the sum of its proper divisors (16998343310563).

212011221001021 is a wasteful number, since it uses less digits than its factorization.

212011221001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49270560651.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212011221001021 its reverse (120100122110212), we get a palindrome (332111343111233).

The spelling of 212011221001021 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-one million, one thousand, twenty-one".