1001121151 has 4 divisors (see below), whose sum is σ = 1035642600. Its totient is φ = 966599704.

The previous prime is 1001121133. The next prime is 1001121179. The reversal of 1001121151 is 1511211001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001121151 - 2⁵ = 1001121119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001121131) 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, 17260681 + ... + 17260738.

It is an arithmetic number, because the mean of its divisors is an integer number (258910650).

Almost surely, 2^1001121151 is an apocalyptic number.

1001121151 is a deficient number, since it is larger than the sum of its proper divisors (34521449).

1001121151 is an equidigital number, since it uses as much as digits as its factorization.

1001121151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34521448.

The product of its (nonzero) digits is 10, while the sum is 13.

The square root of 1001121151 is about 31640.4985896240. The cubic root of 1001121151 is about 1000.3735774225.

Adding to 1001121151 its reverse (1511211001), we get a palindrome (2512332152).

The spelling of 1001121151 in words is "one billion, one million, one hundred twenty-one thousand, one hundred fifty-one".