210220221001021 has 32 divisors (see below), whose sum is σ = 262802867982336. Its totient is φ = 163364312160000.

The previous prime is 210220221001001. The next prime is 210220221001061. The reversal of 210220221001021 is 120100122022012.

It is a happy number.

It is not a de Polignac number, because 210220221001021 - 2¹³ = 210220220992829 is a prime.

It is a super-2 number, since 2×210220221001021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210220221000986 and 210220221001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220221001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143249416 + ... + 144709486.

It is an arithmetic number, because the mean of its divisors is an integer number (8212589624448).

Almost surely, 2^{210220221001021} is an apocalyptic number.

It is an amenable number.

210220221001021 is a deficient number, since it is larger than the sum of its proper divisors (52582646981315).

210220221001021 is a wasteful number, since it uses less digits than its factorization.

210220221001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465153.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210220221001021 its reverse (120100122022012), we get a palindrome (330320343023033).

The spelling of 210220221001021 in words is "two hundred ten trillion, two hundred twenty billion, two hundred twenty-one million, one thousand, twenty-one".