2100021201212 has 24 divisors (see below), whose sum is σ = 4009168904832. Its totient is φ = 954546158000.

The previous prime is 2100021201119. The next prime is 2100021201227. The reversal of 2100021201212 is 2121021200012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7650983 + ... + 7920705.

It is an arithmetic number, because the mean of its divisors is an integer number (167048704368).

Almost surely, 2^{2100021201212} is an apocalyptic number.

2100021201212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2100021201212 is a deficient number, since it is larger than the sum of its proper divisors (1909147703620).

2100021201212 is a wasteful number, since it uses less digits than its factorization.

2100021201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446689 (or 446687 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2100021201212 its reverse (2121021200012), we get a palindrome (4221042401224).

It can be divided in two parts, 21000 and 21201212, that added together give a palindrome (21222212).

The spelling of 2100021201212 in words is "two trillion, one hundred billion, twenty-one million, two hundred one thousand, two hundred twelve".