20110010012021 has 16 divisors (see below), whose sum is σ = 21374639432640. Its totient is φ = 18854560838400.

The previous prime is 20110010012017. The next prime is 20110010012093. The reversal of 20110010012021 is 12021001001102.

It is a cyclic number.

It is not a de Polignac number, because 20110010012021 - 2² = 20110010012017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110010011993 and 20110010012011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110010014021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4578035 + ... + 7821663.

It is an arithmetic number, because the mean of its divisors is an integer number (1335914964540).

Almost surely, 2^{20110010012021} is an apocalyptic number.

It is an amenable number.

20110010012021 is a deficient number, since it is larger than the sum of its proper divisors (1264629420619).

20110010012021 is a wasteful number, since it uses less digits than its factorization.

20110010012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245044.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110010012021 its reverse (12021001001102), we get a palindrome (32131011013123).

The spelling of 20110010012021 in words is "twenty trillion, one hundred ten billion, ten million, twelve thousand, twenty-one".