212461505000 has 40 divisors (see below), whose sum is σ = 497797317930. Its totient is φ = 84984600000.

The previous prime is 212461504999. The next prime is 212461505023. The reversal of 212461505000 is 505164212.

It can be written as a sum of positive squares in 5 ways, for example, as 2838545284 + 209622959716 = 53278^2 + 457846^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×212461505000² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21241151 + ... + 21251150.

Almost surely, 2^212461505000 is an apocalyptic number.

212461505000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212461505000 is an abundant number, since it is smaller than the sum of its proper divisors (285335812930).

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

212461505000 is an equidigital number, since it uses as much as digits as its factorization.

212461505000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42492327 (or 42492308 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 212461505000 its reverse (505164212), we get a palindrome (212966669212).

The spelling of 212461505000 in words is "two hundred twelve billion, four hundred sixty-one million, five hundred five thousand".