1229947101 has 24 divisors (see below), whose sum is σ = 1841144760. Its totient is φ = 790272000.

The previous prime is 1229947067. The next prime is 1229947123. The reversal of 1229947101 is 1017499221.

It can be written as a sum of positive squares in 4 ways, for example, as 299636100 + 930311001 = 17310^2 + 30501^2 .

It is not a de Polignac number, because 1229947101 - 2¹⁰ = 1229946077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229947141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152941 + ... + 160781.

It is an arithmetic number, because the mean of its divisors is an integer number (76714365).

Almost surely, 2^1229947101 is an apocalyptic number.

It is an amenable number.

1229947101 is a deficient number, since it is larger than the sum of its proper divisors (611197659).

1229947101 is a wasteful number, since it uses less digits than its factorization.

1229947101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8477 (or 8474 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1229947101 is about 35070.6016629313. The cubic root of 1229947101 is about 1071.4259095324.

The spelling of 1229947101 in words is "one billion, two hundred twenty-nine million, nine hundred forty-seven thousand, one hundred one".