1211142534453 has 12 divisors (see below), whose sum is σ = 1779079429920. Its totient is φ = 793743129576.

The previous prime is 1211142534451. The next prime is 1211142534493. The reversal of 1211142534453 is 3544352411121.

1211142534453 is a `hidden beast` number, since 1 + 2 + 1 + 114 + 2 + 534 + 4 + 5 + 3 = 666.

It is not a de Polignac number, because 1211142534453 - 2¹ = 1211142534451 is a prime.

It is a super-3 number, since 3×1211142534453³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211142534451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1140435001 + ... + 1140436062.

It is an arithmetic number, because the mean of its divisors is an integer number (148256619160).

Almost surely, 2^{1211142534453} is an apocalyptic number.

It is an amenable number.

1211142534453 is a deficient number, since it is larger than the sum of its proper divisors (567936895467).

1211142534453 is a wasteful number, since it uses less digits than its factorization.

1211142534453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280871128 (or 2280871125 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 1211142534453 its reverse (3544352411121), we get a palindrome (4755494945574).

The spelling of 1211142534453 in words is "one trillion, two hundred eleven billion, one hundred forty-two million, five hundred thirty-four thousand, four hundred fifty-three".