212101002 has 12 divisors (see below), whose sum is σ = 459552210. Its totient is φ = 70700328.

The previous prime is 212100961. The next prime is 212101013. The reversal of 212101002 is 200101212.

It can be written as a sum of positive squares in only one way, i.e., 181198521 + 30902481 = 13461^2 + 5559^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5891677 + ... + 5891712.

Almost surely, 2^212101002 is an apocalyptic number.

212101002 is an abundant number, since it is smaller than the sum of its proper divisors (247451208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212101002 is a wasteful number, since it uses less digits than its factorization.

212101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11783397 (or 11783394 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 212101002 is about 14563.6877884690. The cubic root of 212101002 is about 596.3678737990.

Adding to 212101002 its reverse (200101212), we get a palindrome (412202214).

The spelling of 212101002 in words is "two hundred twelve million, one hundred one thousand, two".