212153345245 has 8 divisors (see below), whose sum is σ = 254817370080. Its totient is φ = 169567105680.

The previous prime is 212153345237. The next prime is 212153345281. The reversal of 212153345245 is 542543351212.

It is a happy number.

212153345245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212153345245 - 2³ = 212153345237 is a prime.

It is a super-2 number, since 2×212153345245² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19440315 + ... + 19451224.

It is an arithmetic number, because the mean of its divisors is an integer number (31852171260).

Almost surely, 2^212153345245 is an apocalyptic number.

It is an amenable number.

212153345245 is a deficient number, since it is larger than the sum of its proper divisors (42664024835).

212153345245 is a wasteful number, since it uses less digits than its factorization.

212153345245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38892635.

The product of its digits is 144000, while the sum is 37.

Adding to 212153345245 its reverse (542543351212), we get a palindrome (754696696457).

The spelling of 212153345245 in words is "two hundred twelve billion, one hundred fifty-three million, three hundred forty-five thousand, two hundred forty-five".