212000722 has 4 divisors (see below), whose sum is σ = 318001086. Its totient is φ = 106000360.

The previous prime is 212000699. The next prime is 212000741. The reversal of 212000722 is 227000212.

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

It can be written as a sum of positive squares in only one way, i.e., 127893481 + 84107241 = 11309^2 + 9171^2 .

It is a super-2 number, since 2×212000722² = 89888612257042568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212000696 and 212000705.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53000179 + ... + 53000182.

Almost surely, 2^212000722 is an apocalyptic number.

212000722 is a deficient number, since it is larger than the sum of its proper divisors (106000364).

212000722 is a wasteful number, since it uses less digits than its factorization.

212000722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106000363.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 212000722 is about 14560.2445721217. The cubic root of 212000722 is about 596.2738726749.

Adding to 212000722 its reverse (227000212), we get a palindrome (439000934).

The spelling of 212000722 in words is "two hundred twelve million, seven hundred twenty-two", and thus it is an aban number.