1101220143 has 8 divisors (see below), whose sum is σ = 1481287728. Its totient is φ = 727649664.

The previous prime is 1101220121. The next prime is 1101220157. The reversal of 1101220143 is 3410221011.

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

It is not a de Polignac number, because 1101220143 - 2⁸ = 1101219887 is a prime.

It is a super-3 number, since 3×1101220143³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101220163) 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, 1623880 + ... + 1624557.

It is an arithmetic number, because the mean of its divisors is an integer number (185160966).

Almost surely, 2^1101220143 is an apocalyptic number.

1101220143 is a deficient number, since it is larger than the sum of its proper divisors (380067585).

1101220143 is a wasteful number, since it uses less digits than its factorization.

1101220143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248553.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1101220143 is about 33184.6371533576. The cubic root of 1101220143 is about 1032.6616499851.

Adding to 1101220143 its reverse (3410221011), we get a palindrome (4511441154).

The spelling of 1101220143 in words is "one billion, one hundred one million, two hundred twenty thousand, one hundred forty-three".