212001221303 has 4 divisors (see below), whose sum is σ = 212422695408. Its totient is φ = 211579747200.

The previous prime is 212001221281. The next prime is 212001221351. The reversal of 212001221303 is 303122100212.

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 212001221303 - 2⁶ = 212001221239 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 (212001221903) 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, 210736298 + ... + 210737303.

It is an arithmetic number, because the mean of its divisors is an integer number (53105673852).

Almost surely, 2^212001221303 is an apocalyptic number.

212001221303 is a deficient number, since it is larger than the sum of its proper divisors (421474105).

212001221303 is an equidigital number, since it uses as much as digits as its factorization.

212001221303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421474104.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212001221303 its reverse (303122100212), we get a palindrome (515123321515).

The spelling of 212001221303 in words is "two hundred twelve billion, one million, two hundred twenty-one thousand, three hundred three".