2011120210021 has 8 divisors (see below), whose sum is σ = 2165832877824. Its totient is φ = 1856409129840.

The previous prime is 2011120210009. The next prime is 2011120210063. The reversal of 2011120210021 is 1200120211102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011120210021 - 2²¹ = 2011118112869 is a prime.

It is a super-2 number, since 2×2011120210021² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011120209983 and 2011120210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011120210621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4243416 + ... + 4693486.

It is an arithmetic number, because the mean of its divisors is an integer number (270729109728).

Almost surely, 2^{2011120210021} is an apocalyptic number.

It is an amenable number.

2011120210021 is a deficient number, since it is larger than the sum of its proper divisors (154712667803).

2011120210021 is a wasteful number, since it uses less digits than its factorization.

2011120210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793811.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2011120210021 its reverse (1200120211102), we get a palindrome (3211240421123).

The spelling of 2011120210021 in words is "two trillion, eleven billion, one hundred twenty million, two hundred ten thousand, twenty-one".