211023000230021 has 6 divisors (see below), whose sum is σ = 245475734961510. Its totient is φ = 180876857339976.

The previous prime is 211023000229969. The next prime is 211023000230059. The reversal of 211023000230021 is 120032000320112.

It can be written as a sum of positive squares in only one way, i.e., 146262755839396 + 64760244390625 = 12093914^2 + 8047375^2 .

It is not a de Polignac number, because 211023000230021 - 2⁶ = 211023000229957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211023000230521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2153295920666 + ... + 2153295920763.

It is an arithmetic number, because the mean of its divisors is an integer number (40912622493585).

Almost surely, 2^{211023000230021} is an apocalyptic number.

It is an amenable number.

211023000230021 is a deficient number, since it is larger than the sum of its proper divisors (34452734731489).

211023000230021 is an equidigital number, since it uses as much as digits as its factorization.

211023000230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306591841443 (or 4306591841436 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 211023000230021 its reverse (120032000320112), we get a palindrome (331055000550133).

Subtracting from 211023000230021 its reverse (120032000320112), we obtain a palindrome (90990999909909).

The spelling of 211023000230021 in words is "two hundred eleven trillion, twenty-three billion, two hundred thirty thousand, twenty-one".