212120211010011 has 96 divisors (see below), whose sum is σ = 296681780747520. Its totient is φ = 134689931136000.

The previous prime is 212120211009991. The next prime is 212120211010031. The reversal of 212120211010011 is 110010112021212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212120211009991) and next prime (212120211010031).

It is not a de Polignac number, because 212120211010011 - 2¹¹ = 212120211007963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212120211010031) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 278738778871 + ... + 278738779631.

It is an arithmetic number, because the mean of its divisors is an integer number (3090435216120).

Almost surely, 2^{212120211010011} is an apocalyptic number.

212120211010011 is a deficient number, since it is larger than the sum of its proper divisors (84561569737509).

212120211010011 is an equidigital number, since it uses as much as digits as its factorization.

212120211010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212120211010011 its reverse (110010112021212), we get a palindrome (322130323031223).

The spelling of 212120211010011 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred eleven million, ten thousand, eleven".