1211002021002 has 16 divisors (see below), whose sum is σ = 2422015400160. Its totient is φ = 403665447312.

The previous prime is 1211002020961. The next prime is 1211002021027. The reversal of 1211002021002 is 2001202001121.

It is a super-3 number, since 3×1211002021002³ (a number of 37 digits) contains 333 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 7 ways as a sum of consecutive naturals, for example, 1635793 + ... + 2257835.

It is an arithmetic number, because the mean of its divisors is an integer number (151375962510).

Almost surely, 2^{1211002021002} is an apocalyptic number.

1211002021002 is an abundant number, since it is smaller than the sum of its proper divisors (1211013379158).

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

1211002021002 is a wasteful number, since it uses less digits than its factorization.

1211002021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946517.

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

Adding to 1211002021002 its reverse (2001202001121), we get a palindrome (3212204022123).

The spelling of 1211002021002 in words is "one trillion, two hundred eleven billion, two million, twenty-one thousand, two".