202121120012102 has 4 divisors (see below), whose sum is σ = 303181680018156. Its totient is φ = 101060560006050.

The previous prime is 202121120012101. The next prime is 202121120012117. The reversal of 202121120012102 is 201210021121202.

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 (202121120012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50530280003024 + ... + 50530280003027.

It is an arithmetic number, because the mean of its divisors is an integer number (75795420004539).

Almost surely, 2^{202121120012102} is an apocalyptic number.

202121120012102 is a deficient number, since it is larger than the sum of its proper divisors (101060560006054).

202121120012102 is a wasteful number, since it uses less digits than its factorization.

202121120012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101060560006053.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202121120012102 its reverse (201210021121202), we get a palindrome (403331141133304).

The spelling of 202121120012102 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred twenty million, twelve thousand, one hundred two".