211122222002021 has 32 divisors (see below), whose sum is σ = 246966841382400. Its totient is φ = 178340579988480.

The previous prime is 211122222001939. The next prime is 211122222002039. The reversal of 211122222002021 is 120200222221112.

It is a cyclic number.

It is not a de Polignac number, because 211122222002021 - 2²⁶ = 211122154893157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211122222001984 and 211122222002002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122222002051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219179171 + ... + 220140303.

It is an arithmetic number, because the mean of its divisors is an integer number (7717713793200).

Almost surely, 2^{211122222002021} is an apocalyptic number.

It is an amenable number.

211122222002021 is a deficient number, since it is larger than the sum of its proper divisors (35844619380379).

211122222002021 is a wasteful number, since it uses less digits than its factorization.

211122222002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976109.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 211122222002021 its reverse (120200222221112), we get a palindrome (331322444223133).

The spelling of 211122222002021 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, two thousand, twenty-one".