121121020102 has 32 divisors (see below), whose sum is σ = 188308882944. Its totient is φ = 58388635200.

The previous prime is 121121020091. The next prime is 121121020169. The reversal of 121121020102 is 201020121121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4132383 + ... + 4161589.

It is an arithmetic number, because the mean of its divisors is an integer number (5884652592).

Almost surely, 2^121121020102 is an apocalyptic number.

121121020102 is a deficient number, since it is larger than the sum of its proper divisors (67187862842).

121121020102 is a wasteful number, since it uses less digits than its factorization.

121121020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29844.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121121020102 its reverse (201020121121), we get a palindrome (322141141223).

The spelling of 121121020102 in words is "one hundred twenty-one billion, one hundred twenty-one million, twenty thousand, one hundred two".