212122211202 has 48 divisors (see below), whose sum is σ = 501719006880. Its totient is φ = 64235966400.

The previous prime is 212122211183. The next prime is 212122211207. The reversal of 212122211202 is 202112221212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212122211207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68452 + ... + 654927.

It is an arithmetic number, because the mean of its divisors is an integer number (10452479310).

Almost surely, 2^212122211202 is an apocalyptic number.

212122211202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212122211202 is an abundant number, since it is smaller than the sum of its proper divisors (289596795678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212122211202 is a wasteful number, since it uses less digits than its factorization.

212122211202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724879 (or 724876 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212122211202 its reverse (202112221212), we get a palindrome (414234432414).

It can be divided in two parts, 212122 and 211202, that added together give a palindrome (423324).

The spelling of 212122211202 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred eleven thousand, two hundred two".