2011101121021 has 8 divisors (see below), whose sum is σ = 2017595257344. Its totient is φ = 2004615448560.

The previous prime is 2011101121009. The next prime is 2011101121027. The reversal of 2011101121021 is 1201211011102.

It is a happy number.

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 2011101121021 - 2¹⁵ = 2011101088253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011101120992 and 2011101121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011101121027) 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, 1639806 + ... + 2590591.

It is an arithmetic number, because the mean of its divisors is an integer number (252199407168).

Almost surely, 2^{2011101121021} is an apocalyptic number.

It is an amenable number.

2011101121021 is a deficient number, since it is larger than the sum of its proper divisors (6494136323).

2011101121021 is a wasteful number, since it uses less digits than its factorization.

2011101121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231931.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2011101121021 its reverse (1201211011102), we get a palindrome (3212312132123).

The spelling of 2011101121021 in words is "two trillion, eleven billion, one hundred one million, one hundred twenty-one thousand, twenty-one".