2011011111021 has 8 divisors (see below), whose sum is σ = 2925107070624. Its totient is φ = 1218794612720.

The previous prime is 2011011111019. The next prime is 2011011111061. The reversal of 2011011111021 is 1201111101102.

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 2011011111021 - 2¹ = 2011011111019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011011110988 and 2011011111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011011111061) 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, 30469865286 + ... + 30469865351.

It is an arithmetic number, because the mean of its divisors is an integer number (365638383828).

Almost surely, 2^{2011011111021} is an apocalyptic number.

It is an amenable number.

2011011111021 is a deficient number, since it is larger than the sum of its proper divisors (914095959603).

2011011111021 is a wasteful number, since it uses less digits than its factorization.

2011011111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60939730651.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 2011011111021 its reverse (1201111101102), we get a palindrome (3212122212123).

The spelling of 2011011111021 in words is "two trillion, eleven billion, eleven million, one hundred eleven thousand, twenty-one".