212222021311 has 32 divisors (see below), whose sum is σ = 226297774080. Its totient is φ = 198461340000.

The previous prime is 212222021303. The next prime is 212222021369. The reversal of 212222021311 is 113120222212.

It is a cyclic number.

It is not a de Polignac number, because 212222021311 - 2³ = 212222021303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222021371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458362666 + ... + 458363128.

It is an arithmetic number, because the mean of its divisors is an integer number (7071805440).

Almost surely, 2^212222021311 is an apocalyptic number.

212222021311 is a deficient number, since it is larger than the sum of its proper divisors (14075752769).

212222021311 is a wasteful number, since it uses less digits than its factorization.

212222021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212222021311 its reverse (113120222212), we get a palindrome (325342243523).

The spelling of 212222021311 in words is "two hundred twelve billion, two hundred twenty-two million, twenty-one thousand, three hundred eleven".