212001122 has 4 divisors (see below), whose sum is σ = 318001686. Its totient is φ = 106000560.

The previous prime is 212001109. The next prime is 212001149. The reversal of 212001122 is 221100212.

It is a happy number.

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., 207331201 + 4669921 = 14399^2 + 2161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53000279 + ... + 53000282.

Almost surely, 2^212001122 is an apocalyptic number.

212001122 is a deficient number, since it is larger than the sum of its proper divisors (106000564).

212001122 is a wasteful number, since it uses less digits than its factorization.

212001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106000563.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 212001122 is about 14560.2583081482. The cubic root of 212001122 is about 596.2742476884.

Adding to 212001122 its reverse (221100212), we get a palindrome (433101334).

It can be divided in two parts, 21200 and 1122, that added together give a palindrome (22322).

The spelling of 212001122 in words is "two hundred twelve million, one thousand, one hundred twenty-two".