2011000221021 has 16 divisors (see below), whose sum is σ = 2925479073600. Its totient is φ = 1218626411520.

The previous prime is 2011000221017. The next prime is 2011000221049. The reversal of 2011000221021 is 1201220001102.

It is not a de Polignac number, because 2011000221021 - 2² = 2011000221017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011000220988 and 2011000221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011000221011) 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, 3787140 + ... + 4285373.

It is an arithmetic number, because the mean of its divisors is an integer number (182842442100).

Almost surely, 2^{2011000221021} is an apocalyptic number.

It is an amenable number.

2011000221021 is a deficient number, since it is larger than the sum of its proper divisors (914478852579).

2011000221021 is a wasteful number, since it uses less digits than its factorization.

2011000221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080076.

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

Adding to 2011000221021 its reverse (1201220001102), we get a palindrome (3212220222123).

The spelling of 2011000221021 in words is "two trillion, eleven billion, two hundred twenty-one thousand, twenty-one".