212023102340 has 192 divisors, whose sum is σ = 533789222400. Its totient is φ = 69209247744.

The previous prime is 212023102301. The next prime is 212023102351. The reversal of 212023102340 is 43201320212.

It is a super-2 number, since 2×212023102340² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 88600184 + ... + 88602576.

It is an arithmetic number, because the mean of its divisors is an integer number (2780152200).

Almost surely, 2^212023102340 is an apocalyptic number.

212023102340 is a gapful number since it is divisible by the number (20) 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 212023102340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266894611200).

212023102340 is an abundant number, since it is smaller than the sum of its proper divisors (321766120060).

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

212023102340 is a wasteful number, since it uses less digits than its factorization.

212023102340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734 (or 2732 counting only the distinct ones).

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

Adding to 212023102340 its reverse (43201320212), we get a palindrome (255224422552).

The spelling of 212023102340 in words is "two hundred twelve billion, twenty-three million, one hundred two thousand, three hundred forty".