1101211143 has 8 divisors (see below), whose sum is σ = 1468595568. Its totient is φ = 733983744.

The previous prime is 1101211141. The next prime is 1101211183. The reversal of 1101211143 is 3411121011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1101211143 - 2¹ = 1101211141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101211141) 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, 21780 + ... + 51737.

It is an arithmetic number, because the mean of its divisors is an integer number (183574446).

Almost surely, 2^1101211143 is an apocalyptic number.

1101211143 is a deficient number, since it is larger than the sum of its proper divisors (367384425).

1101211143 is an equidigital number, since it uses as much as digits as its factorization.

1101211143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78513.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1101211143 is about 33184.5015481625. The cubic root of 1101211143 is about 1032.6588367480.

Adding to 1101211143 its reverse (3411121011), we get a palindrome (4512332154).

It can be divided in two parts, 11012 and 11143, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 1101211143 in words is "one billion, one hundred one million, two hundred eleven thousand, one hundred forty-three".