212545022231 has 8 divisors (see below), whose sum is σ = 215466912960. Its totient is φ = 209623410432.

The previous prime is 212545022219. The next prime is 212545022233. The reversal of 212545022231 is 132220545212.

It is a happy number.

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 212545022231 - 2¹⁴ = 212545005847 is a prime.

It is a super-2 number, since 2×212545022231² (a number of 23 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 = 212545022194 and 212545022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212545022233) 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, 1810655 + ... + 1924463.

It is an arithmetic number, because the mean of its divisors is an integer number (26933364120).

Almost surely, 2^212545022231 is an apocalyptic number.

212545022231 is a deficient number, since it is larger than the sum of its proper divisors (2921890729).

212545022231 is a wasteful number, since it uses less digits than its factorization.

212545022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139465.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 212545022231 its reverse (132220545212), we get a palindrome (344765567443).

The spelling of 212545022231 in words is "two hundred twelve billion, five hundred forty-five million, twenty-two thousand, two hundred thirty-one".