2011222020021 has 16 divisors (see below), whose sum is σ = 2774682825600. Its totient is φ = 1294307396928.

The previous prime is 2011222019993. The next prime is 2011222020029. The reversal of 2011222020021 is 1200202221102.

It is not a de Polignac number, because 2011222020021 - 2¹³ = 2011222011829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011222020029) 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, 2014786 + ... + 2842851.

It is an arithmetic number, because the mean of its divisors is an integer number (173417676600).

Almost surely, 2^{2011222020021} is an apocalyptic number.

It is an amenable number.

2011222020021 is a deficient number, since it is larger than the sum of its proper divisors (763460805579).

2011222020021 is a wasteful number, since it uses less digits than its factorization.

2011222020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4862428.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2011222020021 its reverse (1200202221102), we get a palindrome (3211424241123).

The spelling of 2011222020021 in words is "two trillion, eleven billion, two hundred twenty-two million, twenty thousand, twenty-one".