20211011221010 has 8 divisors (see below), whose sum is σ = 36379820197836. Its totient is φ = 8084404488400.

The previous prime is 20211011220997. The next prime is 20211011221019. The reversal of 20211011221010 is 1012211011202.

It can be written as a sum of positive squares in 2 ways, for example, as 18529572550801 + 1681438670209 = 4304599^2 + 1296703^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20211011221019) 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, 1010550561041 + ... + 1010550561060.

Almost surely, 2^{20211011221010} is an apocalyptic number.

20211011221010 is a deficient number, since it is larger than the sum of its proper divisors (16168808976826).

20211011221010 is a wasteful number, since it uses less digits than its factorization.

20211011221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021101122108.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20211011221010 its reverse (1012211011202), we get a palindrome (21223222232212).

The spelling of 20211011221010 in words is "twenty trillion, two hundred eleven billion, eleven million, two hundred twenty-one thousand, ten".