20213212344 has 32 divisors (see below), whose sum is σ = 54420187920. Its totient is φ = 6219449856.

The previous prime is 20213212333. The next prime is 20213212351. The reversal of 20213212344 is 44321231202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32392657 + ... + 32393280.

Almost surely, 2^20213212344 is an apocalyptic number.

20213212344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20213212344 is an abundant number, since it is smaller than the sum of its proper divisors (34206975576).

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

20213212344 is a wasteful number, since it uses less digits than its factorization.

20213212344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64785959 (or 64785955 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20213212344 its reverse (44321231202), we get a palindrome (64534443546).

The spelling of 20213212344 in words is "twenty billion, two hundred thirteen million, two hundred twelve thousand, three hundred forty-four".