212210120221 has 8 divisors (see below), whose sum is σ = 231962197824. Its totient is φ = 192534750720.

The previous prime is 212210120207. The next prime is 212210120263. The reversal of 212210120221 is 122021012212.

It is a happy number.

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 212210120221 - 2⁵ = 212210120189 is a prime.

It is a super-2 number, since 2×212210120221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212210120195 and 212210120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210120201) 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, 19171236 + ... + 19182301.

It is an arithmetic number, because the mean of its divisors is an integer number (28995274728).

Almost surely, 2^212210120221 is an apocalyptic number.

It is an amenable number.

212210120221 is a deficient number, since it is larger than the sum of its proper divisors (19752077603).

212210120221 is a wasteful number, since it uses less digits than its factorization.

212210120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38354051.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212210120221 its reverse (122021012212), we get a palindrome (334231132433).

The spelling of 212210120221 in words is "two hundred twelve billion, two hundred ten million, one hundred twenty thousand, two hundred twenty-one".