20212001022011 has 4 divisors (see below), whose sum is σ = 20243240591472. Its totient is φ = 20180761452552.

The previous prime is 20212001022001. The next prime is 20212001022019. The reversal of 20212001022011 is 11022010021202.

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

It is a cyclic number.

It is not a de Polignac number, because 20212001022011 - 2¹⁰ = 20212001020987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212001022019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15619783760 + ... + 15619785053.

It is an arithmetic number, because the mean of its divisors is an integer number (5060810147868).

Almost surely, 2^{20212001022011} is an apocalyptic number.

20212001022011 is a deficient number, since it is larger than the sum of its proper divisors (31239569461).

20212001022011 is an equidigital number, since it uses as much as digits as its factorization.

20212001022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31239569460.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20212001022011 its reverse (11022010021202), we get a palindrome (31234011043213).

The spelling of 20212001022011 in words is "twenty trillion, two hundred twelve billion, one million, twenty-two thousand, eleven".