12110021011 has 8 divisors (see below), whose sum is σ = 13212270000.
Its totient is φ = 11007995040.
The previous prime is 12110020981. The next prime is 12110021029. The reversal of 12110021011 is 11012001121.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 12110021011 - 215 = 12109988243 is a prime.
It is a super-2 number, since 2×121100210112 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12110027011) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70165 + ... + 170713.
It is an arithmetic number, because the mean of its divisors is an integer number (1651533750).
Almost surely, 212110021011 is an apocalyptic number.
12110021011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
12110021011 is a deficient number, since it is larger than the sum of its proper divisors (1102248989).
12110021011 is a wasteful number, since it uses less digits than its factorization.
12110021011 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 111509.
The product of its (nonzero) digits is 4, while the sum is 10.
Adding to 12110021011 its reverse (11012001121), we get a palindrome (23122022132).
The spelling of 12110021011 in words is "twelve billion, one hundred ten million, twenty-one thousand, eleven".