2011020210021 has 16 divisors (see below), whose sum is σ = 2742669425664. Its totient is φ = 1310114295024.

The previous prime is 2011020210019. The next prime is 2011020210029. The reversal of 2011020210021 is 1200120201102.

It is not a de Polignac number, because 2011020210021 - 2¹ = 2011020210019 is a prime.

It is a super-2 number, since 2×2011020210021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011020209979 and 2011020210006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020210029) 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, 10999971 + ... + 11181296.

It is an arithmetic number, because the mean of its divisors is an integer number (171416839104).

Almost surely, 2^{2011020210021} is an apocalyptic number.

It is an amenable number.

2011020210021 is a deficient number, since it is larger than the sum of its proper divisors (731649215643).

2011020210021 is a wasteful number, since it uses less digits than its factorization.

2011020210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22181960.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2011020210021 its reverse (1200120201102), we get a palindrome (3211140411123).

The spelling of 2011020210021 in words is "two trillion, eleven billion, twenty million, two hundred ten thousand, twenty-one".