11019316221 has 20 divisors (see below), whose sum is σ = 16561961152. Its totient is φ = 7301133288.

The previous prime is 11019316193. The next prime is 11019316277. The reversal of 11019316221 is 12261391011.

It is a happy number.

11019316221 is a `hidden beast` number, since 1 + 1 + 0 + 1 + 9 + 31 + 622 + 1 = 666.

It is not a de Polignac number, because 11019316221 - 2¹³ = 11019308029 is a prime.

It is a super-3 number, since 3×11019316221³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11019316291) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 404101 + ... + 430506.

Almost surely, 2^11019316221 is an apocalyptic number.

It is an amenable number.

11019316221 is a deficient number, since it is larger than the sum of its proper divisors (5542644931).

11019316221 is an equidigital number, since it uses as much as digits as its factorization.

11019316221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834782 (or 834773 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 11019316221 in words is "eleven billion, nineteen million, three hundred sixteen thousand, two hundred twenty-one".