121121010102 has 32 divisors (see below), whose sum is σ = 252902580480. Its totient is φ = 38598692000.

The previous prime is 121121010077. The next prime is 121121010103. The reversal of 121121010102 is 201010121121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121010103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51352 + ... + 494852.

It is an arithmetic number, because the mean of its divisors is an integer number (7903205640).

Almost surely, 2^121121010102 is an apocalyptic number.

121121010102 is an abundant number, since it is smaller than the sum of its proper divisors (131781570378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121121010102 is a wasteful number, since it uses less digits than its factorization.

121121010102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445508.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121121010102 its reverse (201010121121), we get a palindrome (322131131223).

The spelling of 121121010102 in words is "one hundred twenty-one billion, one hundred twenty-one million, ten thousand, one hundred two".