1201121149 has 2 divisors, whose sum is σ = 1201121150. Its totient is φ = 1201121148.

The previous prime is 1201121113. The next prime is 1201121219. The reversal of 1201121149 is 9411211021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753502500 + 447618649 = 27450^2 + 21157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201121149 is a prime.

It is a super-3 number, since 3×1201121149³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201121549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600560574 + 600560575.

It is an arithmetic number, because the mean of its divisors is an integer number (600560575).

Almost surely, 2^1201121149 is an apocalyptic number.

It is an amenable number.

1201121149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201121149 is an equidigital number, since it uses as much as digits as its factorization.

1201121149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1201121149 is about 34657.1947653009. The cubic root of 1201121149 is about 1062.9894102235.

The spelling of 1201121149 in words is "one billion, two hundred one million, one hundred twenty-one thousand, one hundred forty-nine".