210212001221021 has 8 divisors (see below), whose sum is σ = 213325078487040. Its totient is φ = 207115616058912.

The previous prime is 210212001221017. The next prime is 210212001221039. The reversal of 210212001221021 is 120122100212012.

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 210212001221021 - 2² = 210212001221017 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 (210212001221821) 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, 4173000605 + ... + 4173050978.

It is an arithmetic number, because the mean of its divisors is an integer number (26665634810880).

Almost surely, 2^{210212001221021} is an apocalyptic number.

It is an amenable number.

210212001221021 is a deficient number, since it is larger than the sum of its proper divisors (3113077266019).

210212001221021 is an equidigital number, since it uses as much as digits as its factorization.

210212001221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8346051955.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210212001221021 its reverse (120122100212012), we get a palindrome (330334101433033).

The spelling of 210212001221021 in words is "two hundred ten trillion, two hundred twelve billion, one million, two hundred twenty-one thousand, twenty-one".