102021121210102 has 4 divisors (see below), whose sum is σ = 153031681815156. Its totient is φ = 51010560605050.

The previous prime is 102021121210097. The next prime is 102021121210109. The reversal of 102021121210102 is 201012121120201.

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 (102021121210109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505280302524 + ... + 25505280302527.

It is an arithmetic number, because the mean of its divisors is an integer number (38257920453789).

Almost surely, 2^{102021121210102} is an apocalyptic number.

102021121210102 is a deficient number, since it is larger than the sum of its proper divisors (51010560605054).

102021121210102 is an equidigital number, since it uses as much as digits as its factorization.

102021121210102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51010560605053.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102021121210102 its reverse (201012121120201), we get a palindrome (303033242330303).

The spelling of 102021121210102 in words is "one hundred two trillion, twenty-one billion, one hundred twenty-one million, two hundred ten thousand, one hundred two".