210220212021 has 8 divisors (see below), whose sum is σ = 280300943040. Its totient is φ = 140143144512.

The previous prime is 210220212011. The next prime is 210220212077. The reversal of 210220212021 is 120212022012.

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

It is not a de Polignac number, because 210220212021 - 2¹³ = 210220203829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220212001) 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, 779065 + ... + 1013598.

It is an arithmetic number, because the mean of its divisors is an integer number (35037617880).

Almost surely, 2^210220212021 is an apocalyptic number.

It is an amenable number.

210220212021 is a deficient number, since it is larger than the sum of its proper divisors (70080731019).

210220212021 is a wasteful number, since it uses less digits than its factorization.

210220212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831755.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210220212021 its reverse (120212022012), we get a palindrome (330432234033).

The spelling of 210220212021 in words is "two hundred ten billion, two hundred twenty million, two hundred twelve thousand, twenty-one".