212021131023 has 48 divisors (see below), whose sum is σ = 334606132224. Its totient is φ = 128579088960.

The previous prime is 212021131001. The next prime is 212021131027. The reversal of 212021131023 is 320131120212.

212021131023 is a `hidden beast` number, since 2 + 120 + 211 + 310 + 23 = 666.

It is not a de Polignac number, because 212021131023 - 2⁵ = 212021130991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212021130987 and 212021131005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021131027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25107840 + ... + 25116282.

It is an arithmetic number, because the mean of its divisors is an integer number (6970961088).

Almost surely, 2^212021131023 is an apocalyptic number.

212021131023 is a deficient number, since it is larger than the sum of its proper divisors (122585001201).

212021131023 is a wasteful number, since it uses less digits than its factorization.

212021131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556 (or 11553 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212021131023 its reverse (320131120212), we get a palindrome (532152251235).

The spelling of 212021131023 in words is "two hundred twelve billion, twenty-one million, one hundred thirty-one thousand, twenty-three".