20213100221011 has 4 divisors (see below), whose sum is σ = 20214140383512. Its totient is φ = 20212060058512.

The previous prime is 20213100220991. The next prime is 20213100221057. The reversal of 20213100221011 is 11012200131202.

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 20213100221011 - 2¹³ = 20213100212819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20213100021011) 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, 520052101 + ... + 520090966.

It is an arithmetic number, because the mean of its divisors is an integer number (5053535095878).

Almost surely, 2^{20213100221011} is an apocalyptic number.

20213100221011 is a deficient number, since it is larger than the sum of its proper divisors (1040162501).

20213100221011 is a wasteful number, since it uses less digits than its factorization.

20213100221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040162500.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20213100221011 its reverse (11012200131202), we get a palindrome (31225300352213).

The spelling of 20213100221011 in words is "twenty trillion, two hundred thirteen billion, one hundred million, two hundred twenty-one thousand, eleven".