212103434040 has 64 divisors (see below), whose sum is σ = 636341024160. Its totient is φ = 56558184960.

The previous prime is 212103434009. The next prime is 212103434071. The reversal of 212103434040 is 40434301212.

It is an interprime number because it is at equal distance from previous prime (212103434009) and next prime (212103434071).

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

It is a self number, because there is not a number n which added to its sum of digits gives 212103434040.

It is a congruent number.

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, 4220742 + ... + 4270698.

Almost surely, 2^212103434040 is an apocalyptic number.

212103434040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212103434040 is an abundant number, since it is smaller than the sum of its proper divisors (424237590120).

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

212103434040 is a wasteful number, since it uses less digits than its factorization.

212103434040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85352 (or 85348 counting only the distinct ones).

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

Adding to 212103434040 its reverse (40434301212), we get a palindrome (252537735252).

The spelling of 212103434040 in words is "two hundred twelve billion, one hundred three million, four hundred thirty-four thousand, forty".