2111110010021 has 8 divisors (see below), whose sum is σ = 2232752920800. Its totient is φ = 1990520285040.

The previous prime is 2111110009949. The next prime is 2111110010069. The reversal of 2111110010021 is 1200100111112.

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 2111110010021 - 2³⁴ = 2093930140837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111110009984 and 2111110010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111110010221) 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, 263292326 + ... + 263300343.

It is an arithmetic number, because the mean of its divisors is an integer number (279094115100).

Almost surely, 2^{2111110010021} is an apocalyptic number.

It is an amenable number.

2111110010021 is a deficient number, since it is larger than the sum of its proper divisors (121642910779).

2111110010021 is a wasteful number, since it uses less digits than its factorization.

2111110010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526592899.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2111110010021 its reverse (1200100111112), we get a palindrome (3311210121133).

The spelling of 2111110010021 in words is "two trillion, one hundred eleven billion, one hundred ten million, ten thousand, twenty-one".