121320121002 has 32 divisors (see below), whose sum is σ = 257020013952. Its totient is φ = 38045389824.

The previous prime is 121320120979. The next prime is 121320121007. The reversal of 121320121002 is 200121023121.

121320121002 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (121320121007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483 + ... + 492585.

It is an arithmetic number, because the mean of its divisors is an integer number (8031875436).

Almost surely, 2^121320121002 is an apocalyptic number.

121320121002 is an abundant number, since it is smaller than the sum of its proper divisors (135699892950).

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

121320121002 is a wasteful number, since it uses less digits than its factorization.

121320121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494542.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121320121002 its reverse (200121023121), we get a palindrome (321441144123).

The spelling of 121320121002 in words is "one hundred twenty-one billion, three hundred twenty million, one hundred twenty-one thousand, two".