212235474869 has 24 divisors (see below), whose sum is σ = 247032582720. Its totient is φ = 181691674560.

The previous prime is 212235474851. The next prime is 212235474887. The reversal of 212235474869 is 968474532212.

It is an interprime number because it is at equal distance from previous prime (212235474851) and next prime (212235474887).

It is not a de Polignac number, because 212235474869 - 2¹² = 212235470773 is a prime.

It is a super-2 number, since 2×212235474869² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212235474869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212235474569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107537 + ... + 660329.

It is an arithmetic number, because the mean of its divisors is an integer number (10293024280).

Almost surely, 2^212235474869 is an apocalyptic number.

It is an amenable number.

212235474869 is a deficient number, since it is larger than the sum of its proper divisors (34797107851).

212235474869 is a wasteful number, since it uses less digits than its factorization.

212235474869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553001 (or 552990 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 53.

The spelling of 212235474869 in words is "two hundred twelve billion, two hundred thirty-five million, four hundred seventy-four thousand, eight hundred sixty-nine".