2121212002102 has 4 divisors (see below), whose sum is σ = 3181818003156. Its totient is φ = 1060606001050.

The previous prime is 2121212002097. The next prime is 2121212002109. The reversal of 2121212002102 is 2012002121212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121212002109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530303000524 + ... + 530303000527.

It is an arithmetic number, because the mean of its divisors is an integer number (795454500789).

Almost surely, 2^{2121212002102} is an apocalyptic number.

2121212002102 is a deficient number, since it is larger than the sum of its proper divisors (1060606001054).

2121212002102 is a wasteful number, since it uses less digits than its factorization.

2121212002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060606001053.

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

Adding to 2121212002102 its reverse (2012002121212), we get a palindrome (4133214123314).

The spelling of 2121212002102 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, two thousand, one hundred two".