212120211000 has 64 divisors (see below), whose sum is σ = 661815067680. Its totient is φ = 56565388800.

The previous prime is 212120210971. The next prime is 212120211001. The reversal of 212120211000 is 112021212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120211001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35350369 + ... + 35356368.

Almost surely, 2^212120211000 is an apocalyptic number.

212120211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120211000 is an abundant number, since it is smaller than the sum of its proper divisors (449694856680).

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

212120211000 is a wasteful number, since it uses less digits than its factorization.

212120211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70706761 (or 70706747 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 212120211000 its reverse (112021212), we get a palindrome (212232232212).

The spelling of 212120211000 in words is "two hundred twelve billion, one hundred twenty million, two hundred eleven thousand".