1206212501 has 8 divisors (see below), whose sum is σ = 1299278904. Its totient is φ = 1113186240.

The previous prime is 1206212489. The next prime is 1206212521. The reversal of 1206212501 is 1052126021.

It can be written as a sum of positive squares in 4 ways, for example, as 39601 + 1206172900 = 199^2 + 34730^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1206212501 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 (1206212521) 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, 87671 + ... + 100491.

It is an arithmetic number, because the mean of its divisors is an integer number (162409863).

Almost surely, 2^1206212501 is an apocalyptic number.

It is an amenable number.

1206212501 is a deficient number, since it is larger than the sum of its proper divisors (93066403).

1206212501 is a wasteful number, since it uses less digits than its factorization.

1206212501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20071.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1206212501 is about 34730.5701220121. The cubic root of 1206212501 is about 1064.4892379167.

Adding to 1206212501 its reverse (1052126021), we get a palindrome (2258338522).

The spelling of 1206212501 in words is "one billion, two hundred six million, two hundred twelve thousand, five hundred one".