122121001002 has 128 divisors (see below), whose sum is σ = 328177059840. Its totient is φ = 29258000640.

The previous prime is 122121000931. The next prime is 122121001021. The reversal of 122121001002 is 200100121221.

122121001002 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 63 ways as a sum of consecutive naturals, for example, 8960149 + ... + 8973767.

It is an arithmetic number, because the mean of its divisors is an integer number (2563883280).

Almost surely, 2^122121001002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122121001002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164088529920).

122121001002 is an abundant number, since it is smaller than the sum of its proper divisors (206056058838).

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

122121001002 is a wasteful number, since it uses less digits than its factorization.

122121001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15148.

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

Adding to 122121001002 its reverse (200100121221), we get a palindrome (322221122223).

The spelling of 122121001002 in words is "one hundred twenty-two billion, one hundred twenty-one million, one thousand, two".