11020210981 has 12 divisors (see below), whose sum is σ = 11954426688. Its totient is φ = 10154346384.

The previous prime is 11020210979. The next prime is 11020211021. The reversal of 11020210981 is 18901202011.

It is not a de Polignac number, because 11020210981 - 2¹ = 11020210979 is a prime.

It is a super-2 number, since 2×11020210981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020214981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37236 + ... + 153058.

It is an arithmetic number, because the mean of its divisors is an integer number (996202224).

Almost surely, 2^11020210981 is an apocalyptic number.

It is an amenable number.

11020210981 is a deficient number, since it is larger than the sum of its proper divisors (934215707).

11020210981 is a wasteful number, since it uses less digits than its factorization.

11020210981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116412 (or 116399 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 11020210981 its reverse (18901202011), we get a palindrome (29921412992).

The spelling of 11020210981 in words is "eleven billion, twenty million, two hundred ten thousand, nine hundred eighty-one".