1011132221 has 8 divisors (see below), whose sum is σ = 1103405088. Its totient is φ = 918918000.

The previous prime is 1011132191. The next prime is 1011132257. The reversal of 1011132221 is 1222311101.

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

It is a de Polignac number, because none of the positive numbers 2^k-1011132221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011132196 and 1011132205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011132721) 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, 26411 + ... + 52151.

It is an arithmetic number, because the mean of its divisors is an integer number (137925636).

Almost surely, 2^1011132221 is an apocalyptic number.

1011132221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011132221 is a deficient number, since it is larger than the sum of its proper divisors (92272867).

1011132221 is a wasteful number, since it uses less digits than its factorization.

1011132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29323.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1011132221 is about 31798.3053164787. The cubic root of 1011132221 is about 1003.6970552716.

Adding to 1011132221 its reverse (1222311101), we get a palindrome (2233443322).

The spelling of 1011132221 in words is "one billion, eleven million, one hundred thirty-two thousand, two hundred twenty-one".