212212222102021 has 8 divisors (see below), whose sum is σ = 225592982330400. Its totient is φ = 199052631464400.

The previous prime is 212212222102019. The next prime is 212212222102031. The reversal of 212212222102021 is 120201222212212.

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

It is not a de Polignac number, because 212212222102021 - 2¹ = 212212222102019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212212222101983 and 212212222102001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212222102031) 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, 55292395711 + ... + 55292399548.

It is an arithmetic number, because the mean of its divisors is an integer number (28199122791300).

Almost surely, 2^{212212222102021} is an apocalyptic number.

It is an amenable number.

212212222102021 is a deficient number, since it is larger than the sum of its proper divisors (13380760228379).

212212222102021 is a wasteful number, since it uses less digits than its factorization.

212212222102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110584795379.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212212222102021 its reverse (120201222212212), we get a palindrome (332413444314233).

The spelling of 212212222102021 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred twenty-two million, one hundred two thousand, twenty-one".