1121031133542 has 24 divisors (see below), whose sum is σ = 2444986230960. Its totient is φ = 371202361200.

The previous prime is 1121031133531. The next prime is 1121031133549. The reversal of 1121031133542 is 2453311301211.

1121031133542 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 0 + 3 + 113 + 3 + 542 = 666.

It is a super-2 number, since 2×1121031133542² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121031133549) 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, 206220817 + ... + 206226252.

It is an arithmetic number, because the mean of its divisors is an integer number (101874426290).

Almost surely, 2^{1121031133542} is an apocalyptic number.

1121031133542 is an abundant number, since it is smaller than the sum of its proper divisors (1323955097418).

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

1121031133542 is a wasteful number, since it uses less digits than its factorization.

1121031133542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412447228 (or 412447225 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 1121031133542 its reverse (2453311301211), we get a palindrome (3574342434753).

The spelling of 1121031133542 in words is "one trillion, one hundred twenty-one billion, thirty-one million, one hundred thirty-three thousand, five hundred forty-two".