221020101001012 has 12 divisors (see below), whose sum is σ = 399262117937536. Its totient is φ = 106945210161720.

The previous prime is 221020101000983. The next prime is 221020101001039. The reversal of 221020101001012 is 210100101020122.

It is a junction number, because it is equal to n+sod(n) for n = 221020101000983 and 221020101001001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891210084558 + ... + 891210084805.

Almost surely, 2^{221020101001012} is an apocalyptic number.

It is an amenable number.

221020101001012 is a deficient number, since it is larger than the sum of its proper divisors (178242016936524).

221020101001012 is a wasteful number, since it uses less digits than its factorization.

221020101001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782420169398 (or 1782420169396 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221020101001012 its reverse (210100101020122), we get a palindrome (431120202021134).

The spelling of 221020101001012 in words is "two hundred twenty-one trillion, twenty billion, one hundred one million, one thousand, twelve".