1212450664 has 16 divisors (see below), whose sum is σ = 2274031620. Its totient is φ = 606042240.

The previous prime is 1212450653. The next prime is 1212450671. The reversal of 1212450664 is 4660542121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1040578564 + 171872100 = 32258^2 + 13110^2 .

It is a super-2 number, since 2×1212450664² = 2940073225268081792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7654 + ... + 49834.

Almost surely, 2^1212450664 is an apocalyptic number.

It is an amenable number.

1212450664 is a deficient number, since it is larger than the sum of its proper divisors (1061580956).

1212450664 is a wasteful number, since it uses less digits than its factorization.

1212450664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45780 (or 45776 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1212450664 is about 34820.2622620795. The cubic root of 1212450664 is about 1066.3211546746.

Adding to 1212450664 its reverse (4660542121), we get a palindrome (5872992785).

The spelling of 1212450664 in words is "one billion, two hundred twelve million, four hundred fifty thousand, six hundred sixty-four".