212211202655 has 32 divisors (see below), whose sum is σ = 260695065600. Its totient is φ = 165781635712.

The previous prime is 212211202613. The next prime is 212211202669. The reversal of 212211202655 is 556202112212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212211202655 - 2²⁴ = 212194425439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72499802 + ... + 72502728.

It is an arithmetic number, because the mean of its divisors is an integer number (8146720800).

Almost surely, 2^212211202655 is an apocalyptic number.

212211202655 is a deficient number, since it is larger than the sum of its proper divisors (48483862945).

212211202655 is a wasteful number, since it uses less digits than its factorization.

212211202655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 212211202655 its reverse (556202112212), we get a palindrome (768413314867).

The spelling of 212211202655 in words is "two hundred twelve billion, two hundred eleven million, two hundred two thousand, six hundred fifty-five".