212120210120011 has 4 divisors (see below), whose sum is σ = 213000376967224. Its totient is φ = 211240043272800.

The previous prime is 212120210119999. The next prime is 212120210120023. The reversal of 212120210120011 is 110021012021212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (212120210119999) and next prime (212120210120023).

It is a cyclic number.

It is not a de Polignac number, because 212120210120011 - 2¹³ = 212120210111819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212120210127011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440083423245 + ... + 440083423726.

It is an arithmetic number, because the mean of its divisors is an integer number (53250094241806).

Almost surely, 2^{212120210120011} is an apocalyptic number.

212120210120011 is a deficient number, since it is larger than the sum of its proper divisors (880166847213).

212120210120011 is an equidigital number, since it uses as much as digits as its factorization.

212120210120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880166847212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212120210120011 its reverse (110021012021212), we get a palindrome (322141222141223).

The spelling of 212120210120011 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred ten million, one hundred twenty thousand, eleven".