1221040314044 has 12 divisors (see below), whose sum is σ = 2156424408600. Its totient is φ = 604919054448.

The previous prime is 1221040314031. The next prime is 1221040314077. The reversal of 1221040314044 is 4404130401221.

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, 1400275154 + ... + 1400276025.

It is an arithmetic number, because the mean of its divisors is an integer number (179702034050).

Almost surely, 2^{1221040314044} is an apocalyptic number.

It is an amenable number.

1221040314044 is a deficient number, since it is larger than the sum of its proper divisors (935384094556).

1221040314044 is a wasteful number, since it uses less digits than its factorization.

1221040314044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800551292 (or 2800551290 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1221040314044 its reverse (4404130401221), we get a palindrome (5625170715265).

The spelling of 1221040314044 in words is "one trillion, two hundred twenty-one billion, forty million, three hundred fourteen thousand, forty-four".