210212001220999 has 4 divisors (see below), whose sum is σ = 210667992547320. Its totient is φ = 209756009894680.

The previous prime is 210212001220961. The next prime is 210212001221017. The reversal of 210212001220999 is 999022100212012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210212001220999 - 2⁴¹ = 208012977965447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212001226999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227995662469 + ... + 227995663390.

It is an arithmetic number, because the mean of its divisors is an integer number (52666998136830).

Almost surely, 2^{210212001220999} is an apocalyptic number.

210212001220999 is a deficient number, since it is larger than the sum of its proper divisors (455991326321).

210212001220999 is an equidigital number, since it uses as much as digits as its factorization.

210212001220999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455991326320.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 210212001220999 in words is "two hundred ten trillion, two hundred twelve billion, one million, two hundred twenty thousand, nine hundred ninety-nine".