210000121102 has 4 divisors (see below), whose sum is σ = 315000181656. Its totient is φ = 105000060550.

The previous prime is 210000121087. The next prime is 210000121109. The reversal of 210000121102 is 201121000012.

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 (210000121109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52500030274 + ... + 52500030277.

It is an arithmetic number, because the mean of its divisors is an integer number (78750045414).

Almost surely, 2^210000121102 is an apocalyptic number.

210000121102 is a deficient number, since it is larger than the sum of its proper divisors (105000060554).

210000121102 is a wasteful number, since it uses less digits than its factorization.

210000121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105000060553.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 210000121102 its reverse (201121000012), we get a palindrome (411121121114).

The spelling of 210000121102 in words is "two hundred ten billion, one hundred twenty-one thousand, one hundred two".