1101201270 has 64 divisors (see below), whose sum is σ = 2853192384. Its totient is φ = 270397440.

The previous prime is 1101201263. The next prime is 1101201281. The reversal of 1101201270 is 721021011.

It is a super-2 number, since 2×1101201270² = 2425288474099225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165610 + ... + 172130.

It is an arithmetic number, because the mean of its divisors is an integer number (44581131).

Almost surely, 2^1101201270 is an apocalyptic number.

1101201270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101201270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426596192).

1101201270 is an abundant number, since it is smaller than the sum of its proper divisors (1751991114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101201270 is a wasteful number, since it uses less digits than its factorization.

1101201270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6977.

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 1101201270 is about 33184.3527886261. The cubic root of 1101201270 is about 1032.6557506092.

Adding to 1101201270 its reverse (721021011), we get a palindrome (1822222281).

The spelling of 1101201270 in words is "one billion, one hundred one million, two hundred one thousand, two hundred seventy".