212211125531 has 8 divisors (see below), whose sum is σ = 213294609024. Its totient is φ = 211128819840.

The previous prime is 212211125519. The next prime is 212211125537. The reversal of 212211125531 is 135521112212.

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 212211125531 - 2²² = 212206931227 is a prime.

It is a super-2 number, since 2×212211125531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212211125531.

It is not an unprimeable number, because it can be changed into a prime (212211125537) 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, 67955 + ... + 655011.

It is an arithmetic number, because the mean of its divisors is an integer number (26661826128).

Almost surely, 2^212211125531 is an apocalyptic number.

212211125531 is a deficient number, since it is larger than the sum of its proper divisors (1083483493).

212211125531 is a wasteful number, since it uses less digits than its factorization.

212211125531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588901.

The product of its digits is 1200, while the sum is 26.

Adding to 212211125531 its reverse (135521112212), we get a palindrome (347732237743).

The spelling of 212211125531 in words is "two hundred twelve billion, two hundred eleven million, one hundred twenty-five thousand, five hundred thirty-one".