212021123134 has 4 divisors (see below), whose sum is σ = 318031684704. Its totient is φ = 106010561566.

The previous prime is 212021123087. The next prime is 212021123183. The reversal of 212021123134 is 431321120212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53005280782 + ... + 53005280785.

It is an arithmetic number, because the mean of its divisors is an integer number (79507921176).

Almost surely, 2^212021123134 is an apocalyptic number.

212021123134 is a deficient number, since it is larger than the sum of its proper divisors (106010561570).

212021123134 is a wasteful number, since it uses less digits than its factorization.

212021123134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106010561569.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 212021123134 its reverse (431321120212), we get a palindrome (643342243346).

The spelling of 212021123134 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-three thousand, one hundred thirty-four".