1221046936 has 16 divisors (see below), whose sum is σ = 2292000840. Its totient is φ = 609846720.

The previous prime is 1221046919. The next prime is 1221046973. The reversal of 1221046936 is 6396401221.

It is a happy number.

It is a congruent number.

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, 76885 + ... + 91396.

Almost surely, 2^1221046936 is an apocalyptic number.

It is an amenable number.

1221046936 is a deficient number, since it is larger than the sum of its proper divisors (1070953904).

1221046936 is a wasteful number, since it uses less digits than its factorization.

1221046936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169194 (or 169190 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1221046936 is about 34943.4820245493. The cubic root of 1221046936 is about 1068.8352936454.

The spelling of 1221046936 in words is "one billion, two hundred twenty-one million, forty-six thousand, nine hundred thirty-six".