212120221001002 has 16 divisors (see below), whose sum is σ = 321023627401032. Its totient is φ = 105112506257920.

The previous prime is 212120221000999. The next prime is 212120221001057. The reversal of 212120221001002 is 200100122021212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 154449243473121 + 57670977527881 = 12427761^2 + 7594141^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37623949 + ... + 42892912.

Almost surely, 2^{212120221001002} is an apocalyptic number.

212120221001002 is a deficient number, since it is larger than the sum of its proper divisors (108903406400030).

212120221001002 is a wasteful number, since it uses less digits than its factorization.

212120221001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80528633.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212120221001002 its reverse (200100122021212), we get a palindrome (412220343022214).

The spelling of 212120221001002 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred twenty-one million, one thousand, two".