212011002122 has 4 divisors (see below), whose sum is σ = 318016503186. Its totient is φ = 106005501060.

The previous prime is 212011002121. The next prime is 212011002127. The reversal of 212011002122 is 221200110212.

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., 161884717801 + 50126284321 = 402349^2 + 223889^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212011002097 and 212011002106.

It is not an unprimeable number, because it can be changed into a prime (212011002121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53002750529 + ... + 53002750532.

Almost surely, 2^212011002122 is an apocalyptic number.

212011002122 is a deficient number, since it is larger than the sum of its proper divisors (106005501064).

212011002122 is a wasteful number, since it uses less digits than its factorization.

212011002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106005501063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212011002122 its reverse (221200110212), we get a palindrome (433211112334).

The spelling of 212011002122 in words is "two hundred twelve billion, eleven million, two thousand, one hundred twenty-two".