212000001128 has 8 divisors (see below), whose sum is σ = 397500002130. Its totient is φ = 106000000560.

The previous prime is 212000001127. The next prime is 212000001167. The reversal of 212000001128 is 821100000212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 150821936164 + 61178064964 = 388358^2 + 247342^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (212000001127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13250000063 + ... + 13250000078.

Almost surely, 2^212000001128 is an apocalyptic number.

It is an amenable number.

212000001128 is a deficient number, since it is larger than the sum of its proper divisors (185500001002).

212000001128 is a wasteful number, since it uses less digits than its factorization.

212000001128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26500000147 (or 26500000143 counting only the distinct ones).

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

The spelling of 212000001128 in words is "two hundred twelve billion, one thousand, one hundred twenty-eight".