212235235320 has 64 divisors (see below), whose sum is σ = 638087012640. Its totient is φ = 56473280000.

The previous prime is 212235235307. The next prime is 212235235351. The reversal of 212235235320 is 23532532212.

It is a super-2 number, since 2×212235235320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1862931 + ... + 1973570.

Almost surely, 2^212235235320 is an apocalyptic number.

212235235320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212235235320 is an abundant number, since it is smaller than the sum of its proper divisors (425851777320).

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

212235235320 is a wasteful number, since it uses less digits than its factorization.

212235235320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836976 (or 3836972 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 212235235320 its reverse (23532532212), we get a palindrome (235767767532).

The spelling of 212235235320 in words is "two hundred twelve billion, two hundred thirty-five million, two hundred thirty-five thousand, three hundred twenty".