1221031346 has 8 divisors (see below), whose sum is σ = 1832106864. Its totient is φ = 610329060.

The previous prime is 1221031321. The next prime is 1221031363. The reversal of 1221031346 is 6431301221.

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, 84980 + ... + 98303.

It is an arithmetic number, because the mean of its divisors is an integer number (229013358).

Almost surely, 2^1221031346 is an apocalyptic number.

1221031346 is a deficient number, since it is larger than the sum of its proper divisors (611075518).

1221031346 is a wasteful number, since it uses less digits than its factorization.

1221031346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186616.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1221031346 is about 34943.2589493310. The cubic root of 1221031346 is about 1068.8307447585.

Adding to 1221031346 its reverse (6431301221), we get a palindrome (7652332567).

The spelling of 1221031346 in words is "one billion, two hundred twenty-one million, thirty-one thousand, three hundred forty-six".