212102121011 has 48 divisors (see below), whose sum is σ = 242958824640. Its totient is φ = 184917427200.

The previous prime is 212102120999. The next prime is 212102121017. The reversal of 212102121011 is 110121201212.

It is not a de Polignac number, because 212102121011 - 2³⁴ = 194922251827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102121017) 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, 47952146 + ... + 47956568.

It is an arithmetic number, because the mean of its divisors is an integer number (5061642180).

Almost surely, 2^212102121011 is an apocalyptic number.

212102121011 is a deficient number, since it is larger than the sum of its proper divisors (30856703629).

212102121011 is a wasteful number, since it uses less digits than its factorization.

212102121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668 (or 4657 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212102121011 its reverse (110121201212), we get a palindrome (322223322223).

The spelling of 212102121011 in words is "two hundred twelve billion, one hundred two million, one hundred twenty-one thousand, eleven".