1210205151 has 8 divisors (see below), whose sum is σ = 1792896560. Its totient is φ = 806803416.

The previous prime is 1210205147. The next prime is 1210205173. The reversal of 1210205151 is 1515020121.

It is not a de Polignac number, because 1210205151 - 2² = 1210205147 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 (1210205111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22411180 + ... + 22411233.

It is an arithmetic number, because the mean of its divisors is an integer number (224112070).

Almost surely, 2^1210205151 is an apocalyptic number.

1210205151 is a deficient number, since it is larger than the sum of its proper divisors (582691409).

1210205151 is an equidigital number, since it uses as much as digits as its factorization.

1210205151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44822422 (or 44822416 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1210205151 is about 34788.0029751637. The cubic root of 1210205151 is about 1065.6624563288.

Adding to 1210205151 its reverse (1515020121), we get a palindrome (2725225272).

The spelling of 1210205151 in words is "one billion, two hundred ten million, two hundred five thousand, one hundred fifty-one".