1212150245 has 8 divisors (see below), whose sum is σ = 1458898584. Its totient is φ = 966841344.

The previous prime is 1212150211. The next prime is 1212150253. The reversal of 1212150245 is 5420512121.

It can be written as a sum of positive squares in 4 ways, for example, as 146845924 + 1065304321 = 12118^2 + 32639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212150245 - 2¹² = 1212146149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212150245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358004 + ... + 361373.

It is an arithmetic number, because the mean of its divisors is an integer number (182362323).

Almost surely, 2^1212150245 is an apocalyptic number.

It is an amenable number.

1212150245 is a deficient number, since it is larger than the sum of its proper divisors (246748339).

1212150245 is an equidigital number, since it uses as much as digits as its factorization.

1212150245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719719.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1212150245 is about 34815.9481416204. The cubic root of 1212150245 is about 1066.2330769748.

Adding to 1212150245 its reverse (5420512121), we get a palindrome (6632662366).

The spelling of 1212150245 in words is "one billion, two hundred twelve million, one hundred fifty thousand, two hundred forty-five".