212123011132231 has 8 divisors (see below), whose sum is σ = 212138618877504. Its totient is φ = 212107403869920.

The previous prime is 212123011132117. The next prime is 212123011132273. The reversal of 212123011132231 is 132231110321212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212123011132231 - 2⁷ = 212123011132103 is a prime.

It is a super-2 number, since 2×212123011132231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212123011132196 and 212123011132205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212123011132631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491263845 + ... + 1491406081.

It is an arithmetic number, because the mean of its divisors is an integer number (26517327359688).

Almost surely, 2^{212123011132231} is an apocalyptic number.

212123011132231 is a deficient number, since it is larger than the sum of its proper divisors (15607745273).

212123011132231 is a wasteful number, since it uses less digits than its factorization.

212123011132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241481.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 212123011132231 its reverse (132231110321212), we get a palindrome (344354121453443).

The spelling of 212123011132231 in words is "two hundred twelve trillion, one hundred twenty-three billion, eleven million, one hundred thirty-two thousand, two hundred thirty-one".