21200201111212 has 24 divisors (see below), whose sum is σ = 38381490347760. Its totient is φ = 10234095600960.

The previous prime is 21200201111113. The next prime is 21200201111311. The reversal of 21200201111212 is 21211110200212.

It is an interprime number because it is at equal distance from previous prime (21200201111113) and next prime (21200201111311).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855339 + ... + 6770722.

It is an arithmetic number, because the mean of its divisors is an integer number (1599228764490).

Almost surely, 2^{21200201111212} is an apocalyptic number.

It is an amenable number.

21200201111212 is a deficient number, since it is larger than the sum of its proper divisors (17181289236548).

21200201111212 is a wasteful number, since it uses less digits than its factorization.

21200201111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8647281 (or 8647279 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21200201111212 its reverse (21211110200212), we get a palindrome (42411311311424).

The spelling of 21200201111212 in words is "twenty-one trillion, two hundred billion, two hundred one million, one hundred eleven thousand, two hundred twelve".