1151572170220 has 96 divisors (see below), whose sum is σ = 2523104982720. Its totient is φ = 440951454720.

The previous prime is 1151572170139. The next prime is 1151572170227. The reversal of 1151572170220 is 220712751511.

It is a super-2 number, since 2×1151572170220² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1151572170227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39786874 + ... + 39815806.

It is an arithmetic number, because the mean of its divisors is an integer number (26282343570).

Almost surely, 2^{1151572170220} is an apocalyptic number.

1151572170220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151572170220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261552491360).

1151572170220 is an abundant number, since it is smaller than the sum of its proper divisors (1371532812500).

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

1151572170220 is a wasteful number, since it uses less digits than its factorization.

1151572170220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29555 (or 29553 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 34.

The spelling of 1151572170220 in words is "one trillion, one hundred fifty-one billion, five hundred seventy-two million, one hundred seventy thousand, two hundred twenty".