1212402061 has 8 divisors (see below), whose sum is σ = 1306277280. Its totient is φ = 1118614512.

The previous prime is 1212402047. The next prime is 1212402091. The reversal of 1212402061 is 1602042121.

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 1212402061 - 2⁵ = 1212402029 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 (1212402001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8370 + ... + 49948.

It is an arithmetic number, because the mean of its divisors is an integer number (163284660).

Almost surely, 2^1212402061 is an apocalyptic number.

It is an amenable number.

1212402061 is a deficient number, since it is larger than the sum of its proper divisors (93875219).

1212402061 is a wasteful number, since it uses less digits than its factorization.

1212402061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43835.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1212402061 is about 34819.5643424785. The cubic root of 1212402061 is about 1066.3069060949.

Adding to 1212402061 its reverse (1602042121), we get a palindrome (2814444182).

The spelling of 1212402061 in words is "one billion, two hundred twelve million, four hundred two thousand, sixty-one".