212100022 has 4 divisors (see below), whose sum is σ = 318150036. Its totient is φ = 106050010.

The previous prime is 212100017. The next prime is 212100023. The reversal of 212100022 is 220001212.

212100022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 212099981 and 212100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53025004 + ... + 53025007.

It is an arithmetic number, because the mean of its divisors is an integer number (79537509).

Almost surely, 2^212100022 is an apocalyptic number.

212100022 is a deficient number, since it is larger than the sum of its proper divisors (106050014).

212100022 is a wasteful number, since it uses less digits than its factorization.

212100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106050013.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 212100022 is about 14563.6541431057. The cubic root of 212100022 is about 596.3669553035.

Adding to 212100022 its reverse (220001212), we get a palindrome (432101234).

The spelling of 212100022 in words is "two hundred twelve million, one hundred thousand, twenty-two".