212121110101002 has 16 divisors (see below), whose sum is σ = 426395734012512. Its totient is φ = 70348117731920.

The previous prime is 212121110100989. The next prime is 212121110101037. The reversal of 212121110101002 is 200101011121212.

It is a happy number.

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, 89729740824 + ... + 89729743187.

It is an arithmetic number, because the mean of its divisors is an integer number (26649733375782).

Almost surely, 2^{212121110101002} is an apocalyptic number.

212121110101002 is an abundant number, since it is smaller than the sum of its proper divisors (214274623911510).

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

212121110101002 is a wasteful number, since it uses less digits than its factorization.

212121110101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179459484213.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212121110101002 its reverse (200101011121212), we get a palindrome (412222121222214).

The spelling of 212121110101002 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred ten million, one hundred one thousand, two".