210212000021021 has 16 divisors (see below), whose sum is σ = 219397205422080. Its totient is φ = 201030594850800.

The previous prime is 210212000021017. The next prime is 210212000021047. The reversal of 210212000021021 is 120120000212012.

It is a cyclic number.

It is not a de Polignac number, because 210212000021021 - 2² = 210212000021017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210212000020987 and 210212000021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212000021011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3098472926 + ... + 3098540768.

It is an arithmetic number, because the mean of its divisors is an integer number (13712325338880).

Almost surely, 2^{210212000021021} is an apocalyptic number.

It is an amenable number.

210212000021021 is a deficient number, since it is larger than the sum of its proper divisors (9185205401059).

210212000021021 is a wasteful number, since it uses less digits than its factorization.

210212000021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93856.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210212000021021 its reverse (120120000212012), we get a palindrome (330332000233033).

The spelling of 210212000021021 in words is "two hundred ten trillion, two hundred twelve billion, twenty-one thousand, twenty-one".