121221301302 has 16 divisors (see below), whose sum is σ = 269380669680. Its totient is φ = 40407100416.

The previous prime is 121221301301. The next prime is 121221301373. The reversal of 121221301302 is 203103122121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221301301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122419403 + ... + 1122419510.

It is an arithmetic number, because the mean of its divisors is an integer number (16836291855).

Almost surely, 2^121221301302 is an apocalyptic number.

121221301302 is an abundant number, since it is smaller than the sum of its proper divisors (148159368378).

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

121221301302 is a wasteful number, since it uses less digits than its factorization.

121221301302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244838924 (or 2244838918 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121221301302 its reverse (203103122121), we get a palindrome (324324423423).

The spelling of 121221301302 in words is "one hundred twenty-one billion, two hundred twenty-one million, three hundred one thousand, three hundred two".