21211000001202 has 64 divisors (see below), whose sum is σ = 47731148494848. Its totient is φ = 6228533400000.

The previous prime is 21211000001189. The next prime is 21211000001227. The reversal of 21211000001202 is 20210000011212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33537424 + ... + 34164027.

It is an arithmetic number, because the mean of its divisors is an integer number (745799195232).

Almost surely, 2^{21211000001202} is an apocalyptic number.

21211000001202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21211000001202 is an abundant number, since it is smaller than the sum of its proper divisors (26520148493646).

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

21211000001202 is a wasteful number, since it uses less digits than its factorization.

21211000001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67701615.

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

Adding to 21211000001202 its reverse (20210000011212), we get a palindrome (41421000012414).

The spelling of 21211000001202 in words is "twenty-one trillion, two hundred eleven billion, one thousand, two hundred two".