212132221000 has 96 divisors (see below), whose sum is σ = 577432697400. Its totient is φ = 72731030400.

The previous prime is 212132220991. The next prime is 212132221013. The reversal of 212132221000 is 122231212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51800849604 + 160331371396 = 227598^2 + 400414^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2115615 + ... + 2213614.

Almost surely, 2^212132221000 is an apocalyptic number.

212132221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212132221000 is an abundant number, since it is smaller than the sum of its proper divisors (365300476400).

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

212132221000 is a wasteful number, since it uses less digits than its factorization.

212132221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329264 (or 4329243 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212132221000 its reverse (122231212), we get a palindrome (212254452212).

The spelling of 212132221000 in words is "two hundred twelve billion, one hundred thirty-two million, two hundred twenty-one thousand".