2212001200021 has 8 divisors (see below), whose sum is σ = 2344088741400. Its totient is φ = 2083634434560.

The previous prime is 2212001199997. The next prime is 2212001200027. The reversal of 2212001200021 is 1200021002122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24083936100 + 2187917263921 = 155190^2 + 1479161^2 .

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 2212001200021 - 2³¹ = 2209853716373 is a prime.

It is a super-4 number, since 4×2212001200021⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212001199974 and 2212001200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212001200027) 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 7 ways as a sum of consecutive naturals, for example, 930192756 + ... + 930195133.

It is an arithmetic number, because the mean of its divisors is an integer number (293011092675).

Almost surely, 2^{2212001200021} is an apocalyptic number.

It is an amenable number.

2212001200021 is a deficient number, since it is larger than the sum of its proper divisors (132087541379).

2212001200021 is a wasteful number, since it uses less digits than its factorization.

2212001200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860387959.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2212001200021 its reverse (1200021002122), we get a palindrome (3412022202143).

The spelling of 2212001200021 in words is "two trillion, two hundred twelve billion, one million, two hundred thousand, twenty-one".