20223212340 has 48 divisors (see below), whose sum is σ = 56703870720. Its totient is φ = 5385344640.

The previous prime is 20223212327. The next prime is 20223212357. The reversal of 20223212340 is 4321232202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191251 + ... + 277530.

It is an arithmetic number, because the mean of its divisors is an integer number (1181330640).

Almost surely, 2^20223212340 is an apocalyptic number.

20223212340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223212340 is an abundant number, since it is smaller than the sum of its proper divisors (36480658380).

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

20223212340 is a wasteful number, since it uses less digits than its factorization.

20223212340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469512 (or 469510 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20223212340 its reverse (4321232202), we get a palindrome (24544444542).

The spelling of 20223212340 in words is "twenty billion, two hundred twenty-three million, two hundred twelve thousand, three hundred forty".