1223001221012 has 24 divisors (see below), whose sum is σ = 2147117975520. Its totient is φ = 609540089760.

The previous prime is 1223001220997. The next prime is 1223001221027. The reversal of 1223001221012 is 2101221003221.

It is an interprime number because it is at equal distance from previous prime (1223001220997) and next prime (1223001221027).

It is a congruent number.

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, 4173587 + ... + 4456997.

It is an arithmetic number, because the mean of its divisors is an integer number (89463248980).

Almost surely, 2^{1223001221012} is an apocalyptic number.

It is an amenable number.

1223001221012 is a deficient number, since it is larger than the sum of its proper divisors (924116754508).

1223001221012 is a wasteful number, since it uses less digits than its factorization.

1223001221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286871 (or 286869 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1223001221012 its reverse (2101221003221), we get a palindrome (3324222224233).

The spelling of 1223001221012 in words is "one trillion, two hundred twenty-three billion, one million, two hundred twenty-one thousand, twelve".