212021113344 has 160 divisors (see below), whose sum is σ = 578494224000. Its totient is φ = 68984832000.

The previous prime is 212021113321. The next prime is 212021113351. The reversal of 212021113344 is 443311120212.

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

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, 11005032 + ... + 11024280.

It is an arithmetic number, because the mean of its divisors is an integer number (3615588900).

Almost surely, 2^212021113344 is an apocalyptic number.

212021113344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212021113344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289247112000).

212021113344 is an abundant number, since it is smaller than the sum of its proper divisors (366473110656).

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

212021113344 is a wasteful number, since it uses less digits than its factorization.

212021113344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19442 (or 19426 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 212021113344 its reverse (443311120212), we get a palindrome (655332233556).

The spelling of 212021113344 in words is "two hundred twelve billion, twenty-one million, one hundred thirteen thousand, three hundred forty-four".