212021221021002 has 48 divisors (see below), whose sum is σ = 461929033483008. Its totient is φ = 70281495335520.

The previous prime is 212021221020989. The next prime is 212021221021013. The reversal of 212021221021002 is 200120122120212.

It is a happy number.

212021221021002 is a `hidden beast` number, since 212 + 0 + 21 + 221 + 0 + 210 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130893183 + ... + 132503085.

It is an arithmetic number, because the mean of its divisors is an integer number (9623521530896).

Almost surely, 2^{212021221021002} is an apocalyptic number.

212021221021002 is an abundant number, since it is smaller than the sum of its proper divisors (249907812462006).

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

212021221021002 is a wasteful number, since it uses less digits than its factorization.

212021221021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650515 (or 1650512 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212021221021002 its reverse (200120122120212), we get a palindrome (412141343141214).

The spelling of 212021221021002 in words is "two hundred twelve trillion, twenty-one billion, two hundred twenty-one million, twenty-one thousand, two".