212012112121011 has 24 divisors (see below), whose sum is σ = 310460154155216. Its totient is φ = 139393830735360.

The previous prime is 212012112121009. The next prime is 212012112121049. The reversal of 212012112121011 is 110121211210212.

It is a happy number.

212012112121011 is a `hidden beast` number, since 21 + 201 + 211 + 21 + 210 + 1 + 1 = 666.

It is not a de Polignac number, because 212012112121011 - 2¹ = 212012112121009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212012112121091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5138665 + ... + 21223338.

Almost surely, 2^{212012112121011} is an apocalyptic number.

212012112121011 is a deficient number, since it is larger than the sum of its proper divisors (98448042034205).

212012112121011 is a wasteful number, since it uses less digits than its factorization.

212012112121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26374323 (or 26374320 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212012112121011 its reverse (110121211210212), we get a palindrome (322133323331223).

The spelling of 212012112121011 in words is "two hundred twelve trillion, twelve billion, one hundred twelve million, one hundred twenty-one thousand, eleven".