212200321340 has 96 divisors (see below), whose sum is σ = 541081537920. Its totient is φ = 68347044864.

The previous prime is 212200321337. The next prime is 212200321349. The reversal of 212200321340 is 43123002212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200321349) 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, 556079 + ... + 856518.

It is an arithmetic number, because the mean of its divisors is an integer number (5636266020).

Almost surely, 2^212200321340 is an apocalyptic number.

212200321340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212200321340 is an abundant number, since it is smaller than the sum of its proper divisors (328881216580).

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

212200321340 is a wasteful number, since it uses less digits than its factorization.

212200321340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412679 (or 1412677 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212200321340 its reverse (43123002212), we get a palindrome (255323323552).

The spelling of 212200321340 in words is "two hundred twelve billion, two hundred million, three hundred twenty-one thousand, three hundred forty".