1011121120170 has 96 divisors (see below), whose sum is σ = 3010496112000. Its totient is φ = 230650174080.

The previous prime is 1011121120103. The next prime is 1011121120171. The reversal of 1011121120170 is 710211211101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1011121120171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1293801 + ... + 1922540.

It is an arithmetic number, because the mean of its divisors is an integer number (31359334500).

Almost surely, 2^{1011121120170} is an apocalyptic number.

1011121120170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011121120170 is an abundant number, since it is smaller than the sum of its proper divisors (1999374991830).

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

1011121120170 is a wasteful number, since it uses less digits than its factorization.

1011121120170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216860 (or 3216857 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 18.

Adding to 1011121120170 its reverse (710211211101), we get a palindrome (1721332331271).

The spelling of 1011121120170 in words is "one trillion, eleven billion, one hundred twenty-one million, one hundred twenty thousand, one hundred seventy".