1101211001 has 8 divisors (see below), whose sum is σ = 1203024000. Its totient is φ = 999681840.

The previous prime is 1101210991. The next prime is 1101211009. The reversal of 1101211001 is 1001121011.

It is a happy number.

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 1101211001 - 2¹⁸ = 1100948857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101211001.

It is not an unprimeable number, because it can be changed into a prime (1101211009) 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, 62801 + ... + 78398.

It is an arithmetic number, because the mean of its divisors is an integer number (150378000).

Almost surely, 2^1101211001 is an apocalyptic number.

1101211001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101211001 is a deficient number, since it is larger than the sum of its proper divisors (101812999).

1101211001 is a wasteful number, since it uses less digits than its factorization.

1101211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141919.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1101211001 is about 33184.4994086094. The cubic root of 1101211001 is about 1032.6587923613.

Adding to 1101211001 its reverse (1001121011), we get a palindrome (2102332012).

The spelling of 1101211001 in words is "one billion, one hundred one million, two hundred eleven thousand, one".