1211141140 has 24 divisors (see below), whose sum is σ = 2774614752. Its totient is φ = 440414880.

The previous prime is 1211141101. The next prime is 1211141159. The reversal of 1211141140 is 411411121.

It is a super-2 number, since 2×1211141140² = 2933725722000999200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2752374 + ... + 2752813.

It is an arithmetic number, because the mean of its divisors is an integer number (115608948).

Almost surely, 2^1211141140 is an apocalyptic number.

1211141140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211141140 is an abundant number, since it is smaller than the sum of its proper divisors (1563473612).

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

1211141140 is a wasteful number, since it uses less digits than its factorization.

1211141140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505207 (or 5505205 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1211141140 is about 34801.4531305806. The cubic root of 1211141140 is about 1065.9371181082.

Adding to 1211141140 its reverse (411411121), we get a palindrome (1622552261).

The spelling of 1211141140 in words is "one billion, two hundred eleven million, one hundred forty-one thousand, one hundred forty".