210220030200121 has 4 divisors (see below), whose sum is σ = 210220863624052. Its totient is φ = 210219196776192.

The previous prime is 210220030200091. The next prime is 210220030200151. The reversal of 210220030200121 is 121002030022012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (210220030200091) and next prime (210220030200151).

It can be written as a sum of positive squares in 2 ways, for example, as 8150962190121 + 202069068010000 = 2854989^2 + 14215100^2 .

It is a cyclic number.

It is not a de Polignac number, because 210220030200121 - 2²⁵ = 210219996645689 is a prime.

It is a super-2 number, since 2×210220030200121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210220030200095 and 210220030200104.

It is not an unprimeable number, because it can be changed into a prime (210220030200151) 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, 416333496 + ... + 416838121.

It is an arithmetic number, because the mean of its divisors is an integer number (52555215906013).

Almost surely, 2^{210220030200121} is an apocalyptic number.

It is an amenable number.

210220030200121 is a deficient number, since it is larger than the sum of its proper divisors (833423931).

210220030200121 is an equidigital number, since it uses as much as digits as its factorization.

210220030200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833423930.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 210220030200121 its reverse (121002030022012), we get a palindrome (331222060222133).

The spelling of 210220030200121 in words is "two hundred ten trillion, two hundred twenty billion, thirty million, two hundred thousand, one hundred twenty-one".