212022545 has 8 divisors (see below), whose sum is σ = 290773824. Its totient is φ = 145386864.

The previous prime is 212022529. The next prime is 212022557. The reversal of 212022545 is 545220212.

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

It is not a de Polignac number, because 212022545 - 2⁴ = 212022529 is a prime.

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 212022545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3028859 + ... + 3028928.

It is an arithmetic number, because the mean of its divisors is an integer number (36346728).

Almost surely, 2^212022545 is an apocalyptic number.

It is an amenable number.

212022545 is a deficient number, since it is larger than the sum of its proper divisors (78751279).

212022545 is an equidigital number, since it uses as much as digits as its factorization.

212022545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057799.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 212022545 is about 14560.9939564578. The cubic root of 212022545 is about 596.2943317849.

Adding to 212022545 its reverse (545220212), we get a palindrome (757242757).

The spelling of 212022545 in words is "two hundred twelve million, twenty-two thousand, five hundred forty-five".