10011020101221 has 32 divisors (see below), whose sum is σ = 13751308569600. Its totient is φ = 6474230069120.

The previous prime is 10011020101189. The next prime is 10011020101241. The reversal of 10011020101221 is 12210102011001.

It is a cyclic number.

It is not a de Polignac number, because 10011020101221 - 2⁵ = 10011020101189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10011020101197 and 10011020101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011020101241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 364301560 + ... + 364329038.

It is an arithmetic number, because the mean of its divisors is an integer number (429728392800).

Almost surely, 2^{10011020101221} is an apocalyptic number.

It is an amenable number.

10011020101221 is a deficient number, since it is larger than the sum of its proper divisors (3740288468379).

10011020101221 is a wasteful number, since it uses less digits than its factorization.

10011020101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44249.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10011020101221 its reverse (12210102011001), we get a palindrome (22221122112222).

The spelling of 10011020101221 in words is "ten trillion, eleven billion, twenty million, one hundred one thousand, two hundred twenty-one".