121221021000102 has 16 divisors (see below), whose sum is σ = 242442553866240. Its totient is φ = 40406921689032.

The previous prime is 121221021000097. The next prime is 121221021000109. The reversal of 121221021000102 is 201000120122121.

121221021000102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221021000109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18214102 + ... + 23962377.

It is an arithmetic number, because the mean of its divisors is an integer number (15152659616640).

Almost surely, 2^{121221021000102} is an apocalyptic number.

121221021000102 is an abundant number, since it is smaller than the sum of its proper divisors (121221532866138).

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

121221021000102 is a wasteful number, since it uses less digits than its factorization.

121221021000102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42655507.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121221021000102 its reverse (201000120122121), we get a palindrome (322221141122223).

The spelling of 121221021000102 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, one hundred two", and thus it is an aban number.