1221802 has 8 divisors (see below), whose sum is σ = 1875456. Its totient is φ = 596652.

The previous prime is 1221793. The next prime is 1221811. The reversal of 1221802 is 2081221.

1221802 = T₆₈ + T₆₉ + ... + T₁₉₆.

It is an interprime number because it is at equal distance from previous prime (1221793) and next prime (1221811).

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, 7018 + ... + 7189.

It is an arithmetic number, because the mean of its divisors is an integer number (234432).

2^1221802 is an apocalyptic number.

1221802 is a deficient number, since it is larger than the sum of its proper divisors (653654).

1221802 is a wasteful number, since it uses less digits than its factorization.

1221802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14252.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1221802 is about 1105.3515277956. The cubic root of 1221802 is about 106.9055561661.

The spelling of 1221802 in words is "one million, two hundred twenty-one thousand, eight hundred two".