1221415210244 has 48 divisors (see below), whose sum is σ = 2227638188160. Its totient is φ = 585472861440.

The previous prime is 1221415210199. The next prime is 1221415210271. The reversal of 1221415210244 is 4420125141221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24716849 + ... + 24766215.

It is an arithmetic number, because the mean of its divisors is an integer number (46409128920).

Almost surely, 2^{1221415210244} is an apocalyptic number.

It is an amenable number.

1221415210244 is a deficient number, since it is larger than the sum of its proper divisors (1006222977916).

1221415210244 is a wasteful number, since it uses less digits than its factorization.

1221415210244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52028 (or 52026 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The spelling of 1221415210244 in words is "one trillion, two hundred twenty-one billion, four hundred fifteen million, two hundred ten thousand, two hundred forty-four".