212001220999 has 8 divisors (see below), whose sum is σ = 221775786000. Its totient is φ = 202390934592.

The previous prime is 212001220997. The next prime is 212001221009. The reversal of 212001220999 is 999022100212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212001220999 - 2¹ = 212001220997 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 (212001220997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41067009 + ... + 41072170.

It is an arithmetic number, because the mean of its divisors is an integer number (27721973250).

Almost surely, 2^212001220999 is an apocalyptic number.

212001220999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

212001220999 is a deficient number, since it is larger than the sum of its proper divisors (9774565001).

212001220999 is an equidigital number, since it uses as much as digits as its factorization.

212001220999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82139297.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 212001220999 in words is "two hundred twelve billion, one million, two hundred twenty thousand, nine hundred ninety-nine".