20210121201 has 8 divisors (see below), whose sum is σ = 27287927680. Its totient is φ = 13302864432.

The previous prime is 20210121089. The next prime is 20210121209. The reversal of 20210121201 is 10212101202.

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

It is not a de Polignac number, because 20210121201 - 2²⁷ = 20075903473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20210121209) 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, 42637150 + ... + 42637623.

It is an arithmetic number, because the mean of its divisors is an integer number (3410990960).

Almost surely, 2^20210121201 is an apocalyptic number.

It is an amenable number.

20210121201 is a deficient number, since it is larger than the sum of its proper divisors (7077806479).

20210121201 is an equidigital number, since it uses as much as digits as its factorization.

20210121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85274855.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20210121201 its reverse (10212101202), we get a palindrome (30422222403).

The spelling of 20210121201 in words is "twenty billion, two hundred ten million, one hundred twenty-one thousand, two hundred one".