1101211135512 has 16 divisors (see below), whose sum is σ = 2753027838840. Its totient is φ = 367070378496.

The previous prime is 1101211135471. The next prime is 1101211135517. The reversal of 1101211135512 is 2155311121011.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 45883797313 = 1101211135512 / (1 + 1 + 0 + 1 + 2 + 1 + 1 + 1 + 3 + 5 + 5 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101211135517) 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, 22941898633 + ... + 22941898680.

Almost surely, 2^{1101211135512} is an apocalyptic number.

1101211135512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101211135512 is an abundant number, since it is smaller than the sum of its proper divisors (1651816703328).

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

1101211135512 is a wasteful number, since it uses less digits than its factorization.

1101211135512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45883797322 (or 45883797318 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 24.

Adding to 1101211135512 its reverse (2155311121011), we get a palindrome (3256522256523).

The spelling of 1101211135512 in words is "one trillion, one hundred one billion, two hundred eleven million, one hundred thirty-five thousand, five hundred twelve".