1211053136 has 20 divisors (see below), whose sum is σ = 2396340672. Its totient is φ = 592642656.

The previous prime is 1211053097. The next prime is 1211053139. The reversal of 1211053136 is 6313501121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211053139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804470 + ... + 805973.

Almost surely, 2^1211053136 is an apocalyptic number.

1211053136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1211053136 is a deficient number, since it is larger than the sum of its proper divisors (1185287536).

1211053136 is a wasteful number, since it uses less digits than its factorization.

1211053136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610498 (or 1610492 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1211053136 is about 34800.1887351204. The cubic root of 1211053136 is about 1065.9112997569.

Adding to 1211053136 its reverse (6313501121), we get a palindrome (7524554257).

The spelling of 1211053136 in words is "one billion, two hundred eleven million, fifty-three thousand, one hundred thirty-six".