211202112122 has 12 divisors (see below), whose sum is σ = 334354591386. Its totient is φ = 100043105400.

The previous prime is 211202112113. The next prime is 211202112133. The reversal of 211202112122 is 221211202112.

It can be written as a sum of positive squares in only one way, i.e., 194455422841 + 16746689281 = 440971^2 + 129409^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211202112122.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146261129 + ... + 146262572.

Almost surely, 2^211202112122 is an apocalyptic number.

211202112122 is a deficient number, since it is larger than the sum of its proper divisors (123152479264).

211202112122 is a wasteful number, since it uses less digits than its factorization.

211202112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292523741 (or 292523722 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211202112122 its reverse (221211202112), we get a palindrome (432413314234).

The spelling of 211202112122 in words is "two hundred eleven billion, two hundred two million, one hundred twelve thousand, one hundred twenty-two".