2111010010021 has 24 divisors (see below), whose sum is σ = 2496411710784. Its totient is φ = 1764206559360.

The previous prime is 2111010010013. The next prime is 2111010010033. The reversal of 2111010010021 is 1200100101112.

It is not a de Polignac number, because 2111010010021 - 2³ = 2111010010013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111010010051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2706921 + ... + 3398446.

It is an arithmetic number, because the mean of its divisors is an integer number (104017154616).

Almost surely, 2^{2111010010021} is an apocalyptic number.

It is an amenable number.

2111010010021 is a deficient number, since it is larger than the sum of its proper divisors (385401700763).

2111010010021 is a wasteful number, since it uses less digits than its factorization.

2111010010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105481 (or 6105438 counting only the distinct ones).

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

Adding to 2111010010021 its reverse (1200100101112), we get a palindrome (3311110111133).

The spelling of 2111010010021 in words is "two trillion, one hundred eleven billion, ten million, ten thousand, twenty-one".