212122111121011 has 48 divisors (see below), whose sum is σ = 266184661881600. Its totient is φ = 167549205499200.

The previous prime is 212122111121003. The next prime is 212122111121033. The reversal of 212122111121011 is 110121111221212.

It is not a de Polignac number, because 212122111121011 - 2³ = 212122111121003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212122111121011.

It is not an unprimeable number, because it can be changed into a prime (212122111151011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3173024736 + ... + 3173091586.

It is an arithmetic number, because the mean of its divisors is an integer number (5545513789200).

Almost surely, 2^{212122111121011} is an apocalyptic number.

212122111121011 is a deficient number, since it is larger than the sum of its proper divisors (54062550760589).

212122111121011 is a wasteful number, since it uses less digits than its factorization.

212122111121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75224 (or 75217 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 212122111121011 its reverse (110121111221212), we get a palindrome (322243222342223).

The spelling of 212122111121011 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, eleven".