121020221012102 has 4 divisors (see below), whose sum is σ = 181530331518156. Its totient is φ = 60510110506050.

The previous prime is 121020221012071. The next prime is 121020221012123. The reversal of 121020221012102 is 201210122020121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30255055253024 + ... + 30255055253027.

It is an arithmetic number, because the mean of its divisors is an integer number (45382582879539).

Almost surely, 2^{121020221012102} is an apocalyptic number.

121020221012102 is a deficient number, since it is larger than the sum of its proper divisors (60510110506054).

121020221012102 is an equidigital number, since it uses as much as digits as its factorization.

121020221012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60510110506053.

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

Adding to 121020221012102 its reverse (201210122020121), we get a palindrome (322230343032223).

The spelling of 121020221012102 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty-one million, twelve thousand, one hundred two".