212153353443 has 10 divisors (see below), whose sum is σ = 316920441684. Its totient is φ = 141435568908.

The previous prime is 212153353441. The next prime is 212153353457. The reversal of 212153353443 is 344353351212.

212153353443 is a `hidden beast` number, since 2 + 12 + 153 + 3 + 53 + 443 = 666.

It is not a de Polignac number, because 212153353443 - 2¹ = 212153353441 is a prime.

It is a super-2 number, since 2×212153353443² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212153353398 and 212153353407.

It is not an unprimeable number, because it can be changed into a prime (212153353441) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1309588521 + ... + 1309588682.

Almost surely, 2^212153353443 is an apocalyptic number.

212153353443 is a deficient number, since it is larger than the sum of its proper divisors (104767088241).

212153353443 is an equidigital number, since it uses as much as digits as its factorization.

212153353443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619177215 (or 2619177206 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The spelling of 212153353443 in words is "two hundred twelve billion, one hundred fifty-three million, three hundred fifty-three thousand, four hundred forty-three".