212245651205 has 64 divisors (see below), whose sum is σ = 298800161280. Its totient is φ = 141734707200.

The previous prime is 212245651183. The next prime is 212245651213. The reversal of 212245651205 is 502156542212.

It is a de Polignac number, because none of the positive numbers 2^k-212245651205 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98215325 + ... + 98217485.

It is an arithmetic number, because the mean of its divisors is an integer number (4668752520).

Almost surely, 2^212245651205 is an apocalyptic number.

It is an amenable number.

212245651205 is a deficient number, since it is larger than the sum of its proper divisors (86554510075).

212245651205 is a wasteful number, since it uses less digits than its factorization.

212245651205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 212245651205 in words is "two hundred twelve billion, two hundred forty-five million, six hundred fifty-one thousand, two hundred five".