121121221012102 has 8 divisors (see below), whose sum is σ = 181682106962616. Its totient is φ = 60560518691232.

The previous prime is 121121221012093. The next prime is 121121221012133. The reversal of 121121221012102 is 201210122121121.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121121221012102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44246403 + ... + 46904014.

It is an arithmetic number, because the mean of its divisors is an integer number (22710263370327).

Almost surely, 2^{121121221012102} is an apocalyptic number.

121121221012102 is a deficient number, since it is larger than the sum of its proper divisors (60560885950514).

121121221012102 is an equidigital number, since it uses as much as digits as its factorization.

121121221012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91814822.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121121221012102 its reverse (201210122121121), we get a palindrome (322331343133223).

The spelling of 121121221012102 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty-one million, twelve thousand, one hundred two".