121121200002 has 64 divisors (see below), whose sum is σ = 274094471808. Its totient is φ = 35357760000.

The previous prime is 121121199989. The next prime is 121121200037. The reversal of 121121200002 is 200002121121.

121121200002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102 + ... + 492182.

It is an arithmetic number, because the mean of its divisors is an integer number (4282726122).

Almost surely, 2^121121200002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121121200002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137047235904).

121121200002 is an abundant number, since it is smaller than the sum of its proper divisors (152973271806).

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

121121200002 is a wasteful number, since it uses less digits than its factorization.

121121200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491235.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121121200002 its reverse (200002121121), we get a palindrome (321123321123).

It can be divided in two parts, 121121 and 200002, that multiplied together give a palindrome (24224442242).

The spelling of 121121200002 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred thousand, two".