2111001101021 has 8 divisors (see below), whose sum is σ = 2156984987520. Its totient is φ = 2065061755008.

The previous prime is 2111001101017. The next prime is 2111001101029. The reversal of 2111001101021 is 1201011001112.

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 2111001101021 - 2² = 2111001101017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111001100993 and 2111001101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111001101029) 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, 11039291 + ... + 11228888.

It is an arithmetic number, because the mean of its divisors is an integer number (269623123440).

Almost surely, 2^{2111001101021} is an apocalyptic number.

It is an amenable number.

2111001101021 is a deficient number, since it is larger than the sum of its proper divisors (45983886499).

2111001101021 is a wasteful number, since it uses less digits than its factorization.

2111001101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22270243.

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

Adding to 2111001101021 its reverse (1201011001112), we get a palindrome (3312012102133).

Subtracting from 2111001101021 its reverse (1201011001112), we obtain a palindrome (909990099909).

The spelling of 2111001101021 in words is "two trillion, one hundred eleven billion, one million, one hundred one thousand, twenty-one".