20212122202011 has 32 divisors (see below), whose sum is σ = 31553518572800. Its totient is φ = 12751926707520.

The previous prime is 20212122201949. The next prime is 20212122202081. The reversal of 20212122202011 is 11020222121202.

It is a happy number.

20212122202011 is a `hidden beast` number, since 20 + 212 + 12 + 220 + 201 + 1 = 666.

It is not a de Polignac number, because 20212122202011 - 2⁹ = 20212122201499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212122202081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20543785 + ... + 21505146.

It is an arithmetic number, because the mean of its divisors is an integer number (986047455400).

Almost surely, 2^{20212122202011} is an apocalyptic number.

20212122202011 is a deficient number, since it is larger than the sum of its proper divisors (11341396370789).

20212122202011 is a wasteful number, since it uses less digits than its factorization.

20212122202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42049896 (or 42049890 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20212122202011 its reverse (11020222121202), we get a palindrome (31232344323213).

The spelling of 20212122202011 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-two million, two hundred two thousand, eleven".