21112012201210 has 32 divisors (see below), whose sum is σ = 43430654027520. Its totient is φ = 7238366028672.

The previous prime is 21112012201183. The next prime is 21112012201253. The reversal of 21112012201210 is 1210221021112.

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, 14730411 + ... + 16099969.

It is an arithmetic number, because the mean of its divisors is an integer number (1357207938360).

Almost surely, 2^{21112012201210} is an apocalyptic number.

21112012201210 is an abundant number, since it is smaller than the sum of its proper divisors (22318641826310).

21112012201210 is a wasteful number, since it uses less digits than its factorization.

21112012201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589790.

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

Adding to 21112012201210 its reverse (1210221021112), we get a palindrome (22322233222322).

The spelling of 21112012201210 in words is "twenty-one trillion, one hundred twelve billion, twelve million, two hundred one thousand, two hundred ten".