1221419602 has 16 divisors (see below), whose sum is σ = 2021187672. Its totient is φ = 549982080.

The previous prime is 1221419557. The next prime is 1221419611. The reversal of 1221419602 is 2069141221.

It can be written as a sum of positive squares in 4 ways, for example, as 199402641 + 1022016961 = 14121^2 + 31969^2 .

It is a super-3 number, since 3×1221419602³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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, 571833 + ... + 573964.

Almost surely, 2^1221419602 is an apocalyptic number.

1221419602 is a deficient number, since it is larger than the sum of its proper divisors (799768070).

1221419602 is a wasteful number, since it uses less digits than its factorization.

1221419602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145853.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1221419602 is about 34948.8140285189. The cubic root of 1221419602 is about 1068.9440194844.

The spelling of 1221419602 in words is "one billion, two hundred twenty-one million, four hundred nineteen thousand, six hundred two".