1212445405002 has 64 divisors (see below), whose sum is σ = 2641601039616. Its totient is φ = 368766397440.

The previous prime is 1212445404979. The next prime is 1212445405037. The reversal of 1212445405002 is 2005045442121.

It is a super-2 number, since 2×1212445405002² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3103227 + ... + 3472017.

It is an arithmetic number, because the mean of its divisors is an integer number (41275016244).

Almost surely, 2^{1212445405002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212445405002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320800519808).

1212445405002 is an abundant number, since it is smaller than the sum of its proper divisors (1429155634614).

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

1212445405002 is a wasteful number, since it uses less digits than its factorization.

1212445405002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369295.

The product of its (nonzero) digits is 12800, while the sum is 30.

The spelling of 1212445405002 in words is "one trillion, two hundred twelve billion, four hundred forty-five million, four hundred five thousand, two".