212102020011 has 64 divisors (see below), whose sum is σ = 352483891200. Its totient is φ = 110779232256.

The previous prime is 212102019991. The next prime is 212102020033. The reversal of 212102020011 is 110020201212.

It is not a de Polignac number, because 212102020011 - 2¹⁷ = 212101888939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212102020061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1280625 + ... + 1436733.

It is an arithmetic number, because the mean of its divisors is an integer number (5507560800).

Almost surely, 2^212102020011 is an apocalyptic number.

212102020011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212102020011 is a deficient number, since it is larger than the sum of its proper divisors (140381871189).

212102020011 is a wasteful number, since it uses less digits than its factorization.

212102020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156268.

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

Adding to 212102020011 its reverse (110020201212), we get a palindrome (322122221223).

The spelling of 212102020011 in words is "two hundred twelve billion, one hundred two million, twenty thousand, eleven".