1220121201004 has 24 divisors (see below), whose sum is σ = 2285686468800. Its totient is φ = 568156346640.

The previous prime is 1220121200929. The next prime is 1220121201017. The reversal of 1220121201004 is 4001021210221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136048282 + ... + 136057249.

It is an arithmetic number, because the mean of its divisors is an integer number (95236936200).

Almost surely, 2^{1220121201004} is an apocalyptic number.

It is an amenable number.

1220121201004 is a deficient number, since it is larger than the sum of its proper divisors (1065565267796).

1220121201004 is a wasteful number, since it uses less digits than its factorization.

1220121201004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272105613 (or 272105611 counting only the distinct ones).

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

Adding to 1220121201004 its reverse (4001021210221), we get a palindrome (5221142411225).

The spelling of 1220121201004 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred one thousand, four".