1121022151 has 4 divisors (see below), whose sum is σ = 1129579704. Its totient is φ = 1112464600.

The previous prime is 1121022131. The next prime is 1121022167. The reversal of 1121022151 is 1512201211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121022151 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 (1121022101) 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, 4278580 + ... + 4278841.

It is an arithmetic number, because the mean of its divisors is an integer number (282394926).

Almost surely, 2^1121022151 is an apocalyptic number.

1121022151 is a deficient number, since it is larger than the sum of its proper divisors (8557553).

1121022151 is an equidigital number, since it uses as much as digits as its factorization.

1121022151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8557552.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1121022151 is about 33481.6688801499. The cubic root of 1121022151 is about 1038.8146477065.

Adding to 1121022151 its reverse (1512201211), we get a palindrome (2633223362).

The spelling of 1121022151 in words is "one billion, one hundred twenty-one million, twenty-two thousand, one hundred fifty-one".