21210200201212 has 48 divisors (see below), whose sum is σ = 42325960303872. Its totient is φ = 9205843553280.

The previous prime is 21210200201209. The next prime is 21210200201287.

It is a happy number.

21210200201212 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17577858 + ... + 18745705.

It is an arithmetic number, because the mean of its divisors is an integer number (881790839664).

Almost surely, 2^{21210200201212} is an apocalyptic number.

21210200201212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21210200201212 is a deficient number, since it is larger than the sum of its proper divisors (21115760102660).

21210200201212 is a wasteful number, since it uses less digits than its factorization.

21210200201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36324178 (or 36324176 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

It can be divided in two parts, 21210200 and 201212, that added together give a palindrome (21411412).

The spelling of 21210200201212 in words is "twenty-one trillion, two hundred ten billion, two hundred million, two hundred one thousand, two hundred twelve".