101221220012 has 24 divisors (see below), whose sum is σ = 193611457872. Its totient is φ = 45921324800.

The previous prime is 101221219901. The next prime is 101221220047. The reversal of 101221220012 is 210022122101.

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, 2184833 + ... + 2230680.

It is an arithmetic number, because the mean of its divisors is an integer number (8067144078).

Almost surely, 2^101221220012 is an apocalyptic number.

It is an amenable number.

101221220012 is a deficient number, since it is larger than the sum of its proper divisors (92390237860).

101221220012 is a wasteful number, since it uses less digits than its factorization.

101221220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416049 (or 4416047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101221220012 its reverse (210022122101), we get a palindrome (311243342113).

The spelling of 101221220012 in words is "one hundred one billion, two hundred twenty-one million, two hundred twenty thousand, twelve".