212001021002 has 16 divisors (see below), whose sum is σ = 318522990600. Its totient is φ = 105826798080.

The previous prime is 212001020977. The next prime is 212001021007. The reversal of 212001021002 is 200120100212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 182048142241 + 29952878761 = 426671^2 + 173069^2 .

It is not an unprimeable number, because it can be changed into a prime (212001021007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4196252 + ... + 4246472.

Almost surely, 2^212001021002 is an apocalyptic number.

212001021002 is a deficient number, since it is larger than the sum of its proper divisors (106521969598).

212001021002 is a wasteful number, since it uses less digits than its factorization.

212001021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53641.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212001021002 its reverse (200120100212), we get a palindrome (412121121214).

The spelling of 212001021002 in words is "two hundred twelve billion, one million, twenty-one thousand, two".