2121020210102 has 8 divisors (see below), whose sum is σ = 3211264243656. Its totient is φ = 1050598795552.

The previous prime is 2121020210093. The next prime is 2121020210131. The reversal of 2121020210102 is 2010120201212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2121020210102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4955654483 + ... + 4955654910.

It is an arithmetic number, because the mean of its divisors is an integer number (401408030457).

Almost surely, 2^{2121020210102} is an apocalyptic number.

2121020210102 is a deficient number, since it is larger than the sum of its proper divisors (1090244033554).

2121020210102 is a wasteful number, since it uses less digits than its factorization.

2121020210102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9911309502.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2121020210102 its reverse (2010120201212), we get a palindrome (4131140411314).

The spelling of 2121020210102 in words is "two trillion, one hundred twenty-one billion, twenty million, two hundred ten thousand, one hundred two".