210211221000 has 128 divisors (see below), whose sum is σ = 715482668160. Its totient is φ = 50960288000.

The previous prime is 210211220993. The next prime is 210211221007. The reversal of 210211221000 is 122112012.

210211221000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (210211220993) and next prime (210211221007).

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

It is not an unprimeable number, because it can be changed into a prime (210211221007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3152019 + ... + 3218018.

It is an arithmetic number, because the mean of its divisors is an integer number (5589708345).

Almost surely, 2^210211221000 is an apocalyptic number.

210211221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210211221000 is an abundant number, since it is smaller than the sum of its proper divisors (505271447160).

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

210211221000 is a wasteful number, since it uses less digits than its factorization.

210211221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370072 (or 6370058 counting only the distinct ones).

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

Adding to 210211221000 its reverse (122112012), we get a palindrome (210333333012).

The spelling of 210211221000 in words is "two hundred ten billion, two hundred eleven million, two hundred twenty-one thousand".