21211201212002 has 8 divisors (see below), whose sum is σ = 33491370334800. Its totient is φ = 10047411100404.

The previous prime is 21211201211999. The next prime is 21211201212073. The reversal of 21211201212002 is 20021210211212.

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

It is a super-2 number, since 2×21211201212002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279094752752 + ... + 279094752827.

It is an arithmetic number, because the mean of its divisors is an integer number (4186421291850).

Almost surely, 2^{21211201212002} is an apocalyptic number.

21211201212002 is a deficient number, since it is larger than the sum of its proper divisors (12280169122798).

21211201212002 is a wasteful number, since it uses less digits than its factorization.

21211201212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558189505600.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21211201212002 its reverse (20021210211212), we get a palindrome (41232411423214).

The spelling of 21211201212002 in words is "twenty-one trillion, two hundred eleven billion, two hundred one million, two hundred twelve thousand, two".