211320221020101 has 6 divisors (see below), whose sum is σ = 305240319251270. Its totient is φ = 140880147346728.

The previous prime is 211320221020009. The next prime is 211320221020127. The reversal of 211320221020101 is 101020122023112.

211320221020101 is a `hidden beast` number, since 2 + 1 + 1 + 320 + 221 + 0 + 20 + 101 = 666.

It can be written as a sum of positive squares in only one way, i.e., 132452500457601 + 78867720562500 = 11508801^2 + 8880750^2 .

It is not a de Polignac number, because 211320221020101 - 2¹⁰ = 211320221019077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211320221022101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11740012278886 + ... + 11740012278903.

Almost surely, 2^{211320221020101} is an apocalyptic number.

It is an amenable number.

211320221020101 is a deficient number, since it is larger than the sum of its proper divisors (93920098231169).

211320221020101 is a wasteful number, since it uses less digits than its factorization.

211320221020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23480024557795 (or 23480024557792 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211320221020101 its reverse (101020122023112), we get a palindrome (312340343043213).

The spelling of 211320221020101 in words is "two hundred eleven trillion, three hundred twenty billion, two hundred twenty-one million, twenty thousand, one hundred one".