1212506641 has 8 divisors (see below), whose sum is σ = 1277108000. Its totient is φ = 1147983840.

The previous prime is 1212506629. The next prime is 1212506651. The reversal of 1212506641 is 1466052121.

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 1212506641 - 2⁵ = 1212506609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212506651) 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, 13501 + ... + 51061.

It is an arithmetic number, because the mean of its divisors is an integer number (159638500).

Almost surely, 2^1212506641 is an apocalyptic number.

It is an amenable number.

1212506641 is a deficient number, since it is larger than the sum of its proper divisors (64601359).

1212506641 is a wasteful number, since it uses less digits than its factorization.

1212506641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39279.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1212506641 is about 34821.0660520324. The cubic root of 1212506641 is about 1066.3375645631.

Adding to 1212506641 its reverse (1466052121), we get a palindrome (2678558762).

The spelling of 1212506641 in words is "one billion, two hundred twelve million, five hundred six thousand, six hundred forty-one".