1121161501 has 2 divisors, whose sum is σ = 1121161502. Its totient is φ = 1121161500.

The previous prime is 1121161493. The next prime is 1121161507. The reversal of 1121161501 is 1051611211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767345401 + 353816100 = 27701^2 + 18810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121161501 - 2³ = 1121161493 is a prime.

It is a super-2 number, since 2×1121161501² = 2514006222649146002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121161507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560580750 + 560580751.

It is an arithmetic number, because the mean of its divisors is an integer number (560580751).

Almost surely, 2^1121161501 is an apocalyptic number.

It is an amenable number.

1121161501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121161501 is an equidigital number, since it uses as much as digits as its factorization.

1121161501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 19.

The square root of 1121161501 is about 33483.7498049427. The cubic root of 1121161501 is about 1038.8576896224.

Adding to 1121161501 its reverse (1051611211), we get a palindrome (2172772712).

The spelling of 1121161501 in words is "one billion, one hundred twenty-one million, one hundred sixty-one thousand, five hundred one".