21212211001002 has 32 divisors (see below), whose sum is σ = 51337115701632. Its totient is φ = 5704123966464.

The previous prime is 21212211000997. The next prime is 21212211001013. The reversal of 21212211001002 is 20010011221212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14854488783 + ... + 14854490210.

It is an arithmetic number, because the mean of its divisors is an integer number (1604284865676).

Almost surely, 2^{21212211001002} is an apocalyptic number.

21212211001002 is an abundant number, since it is smaller than the sum of its proper divisors (30124904700630).

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

21212211001002 is a wasteful number, since it uses less digits than its factorization.

21212211001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29708979022.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21212211001002 its reverse (20010011221212), we get a palindrome (41222222222214).

The spelling of 21212211001002 in words is "twenty-one trillion, two hundred twelve billion, two hundred eleven million, one thousand, two".