1211123053 has 8 divisors (see below), whose sum is σ = 1412388800. Its totient is φ = 1038105180.

The previous prime is 1211123051. The next prime is 1211123059. The reversal of 1211123053 is 3503211121.

It is not a de Polignac number, because 1211123053 - 2¹ = 1211123051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211123053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211123051) 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, 1765143 + ... + 1765828.

It is an arithmetic number, because the mean of its divisors is an integer number (176548600).

Almost surely, 2^1211123053 is an apocalyptic number.

It is an amenable number.

1211123053 is a deficient number, since it is larger than the sum of its proper divisors (201265747).

1211123053 is an frugal number, since it uses more digits than its factorization.

1211123053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530992 (or 3530978 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1211123053 is about 34801.1932697717. The cubic root of 1211123053 is about 1065.9318119002.

Adding to 1211123053 its reverse (3503211121), we get a palindrome (4714334174).

The spelling of 1211123053 in words is "one billion, two hundred eleven million, one hundred twenty-three thousand, fifty-three".