20011101024021 has 16 divisors (see below), whose sum is σ = 26761316771904. Its totient is φ = 13300811645184.

The previous prime is 20011101023989. The next prime is 20011101024043. The reversal of 20011101024021 is 12042010111002.

It is not a de Polignac number, because 20011101024021 - 2⁵ = 20011101023989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011101024221) 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, 43652415 + ... + 44108451.

It is an arithmetic number, because the mean of its divisors is an integer number (1672582298244).

Almost surely, 2^{20011101024021} is an apocalyptic number.

It is an amenable number.

20011101024021 is a deficient number, since it is larger than the sum of its proper divisors (6750215747883).

20011101024021 is a wasteful number, since it uses less digits than its factorization.

20011101024021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499780.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20011101024021 its reverse (12042010111002), we get a palindrome (32053111135023).

The spelling of 20011101024021 in words is "twenty trillion, eleven billion, one hundred one million, twenty-four thousand, twenty-one".