221012211202012 has 48 divisors (see below), whose sum is σ = 392318247877920. Its totient is φ = 108932226859008.

The previous prime is 221012211201919. The next prime is 221012211202031. The reversal of 221012211202012 is 210202112210122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335791539 + ... + 336449077.

It is an arithmetic number, because the mean of its divisors is an integer number (8173296830790).

Almost surely, 2^{221012211202012} is an apocalyptic number.

It is an amenable number.

221012211202012 is a deficient number, since it is larger than the sum of its proper divisors (171306036675908).

221012211202012 is a wasteful number, since it uses less digits than its factorization.

221012211202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661702 (or 661700 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221012211202012 its reverse (210202112210122), we get a palindrome (431214323412134).

The spelling of 221012211202012 in words is "two hundred twenty-one trillion, twelve billion, two hundred eleven million, two hundred two thousand, twelve".