20211051 has 8 divisors (see below), whose sum is σ = 30797824. Its totient is φ = 11549160.

The previous prime is 20211031. The next prime is 20211077. The reversal of 20211051 is 15011202.

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

It is not a de Polignac number, because 20211051 - 2⁷ = 20210923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481195 + ... + 481236.

It is an arithmetic number, because the mean of its divisors is an integer number (3849728).

Almost surely, 2^20211051 is an apocalyptic number.

20211051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20211051 is a deficient number, since it is larger than the sum of its proper divisors (10586773).

20211051 is an equidigital number, since it uses as much as digits as its factorization.

20211051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962441.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 20211051 is about 4495.6702503631. The cubic root of 20211051 is about 272.3932236040.

Adding to 20211051 its reverse (15011202), we get a palindrome (35222253).

The spelling of 20211051 in words is "twenty million, two hundred eleven thousand, fifty-one".