2011001011021 has 8 divisors (see below), whose sum is σ = 2111395813920. Its totient is φ = 1912676204208.

The previous prime is 2011001011001. The next prime is 2011001011093. The reversal of 2011001011021 is 1201101001102.

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 2011001011021 - 2¹⁵ = 2011000978253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011001010989 and 2011001011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011001011001) 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, 517497031 + ... + 517500916.

It is an arithmetic number, because the mean of its divisors is an integer number (263924476740).

Almost surely, 2^{2011001011021} is an apocalyptic number.

It is an amenable number.

2011001011021 is a deficient number, since it is larger than the sum of its proper divisors (100394802899).

2011001011021 is a wasteful number, since it uses less digits than its factorization.

2011001011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034998043.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2011001011021 its reverse (1201101001102), we get a palindrome (3212102012123).

It can be divided in two parts, 201100 and 1011021, that added together give a palindrome (1212121).

The spelling of 2011001011021 in words is "two trillion, eleven billion, one million, eleven thousand, twenty-one".