21011002212002 has 8 divisors (see below), whose sum is σ = 34381639983312. Its totient is φ = 9550455550900.

The previous prime is 21011002211987. The next prime is 21011002212007. The reversal of 21011002212002 is 20021220011012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21011002212007) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 477522777524 + ... + 477522777567.

It is an arithmetic number, because the mean of its divisors is an integer number (4297704997914).

Almost surely, 2^{21011002212002} is an apocalyptic number.

21011002212002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011002212002 is a deficient number, since it is larger than the sum of its proper divisors (13370637771310).

21011002212002 is a wasteful number, since it uses less digits than its factorization.

21011002212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955045555104.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21011002212002 its reverse (20021220011012), we get a palindrome (41032222223014).

The spelling of 21011002212002 in words is "twenty-one trillion, eleven billion, two million, two hundred twelve thousand, two".