1216028210 has 8 divisors (see below), whose sum is σ = 2188850796. Its totient is φ = 486411280.

The previous prime is 1216028201. The next prime is 1216028251. The reversal of 1216028210 is 128206121.

It can be written as a sum of positive squares in 2 ways, for example, as 1079582449 + 136445761 = 32857^2 + 11681^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60801401 + ... + 60801420.

Almost surely, 2^1216028210 is an apocalyptic number.

1216028210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216028210 is a deficient number, since it is larger than the sum of its proper divisors (972822586).

1216028210 is a wasteful number, since it uses less digits than its factorization.

1216028210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121602828.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1216028210 is about 34871.5960345953. The cubic root of 1216028210 is about 1067.3689133296.

The spelling of 1216028210 in words is "one billion, two hundred sixteen million, twenty-eight thousand, two hundred ten".