2111221200023 has 4 divisors (see below), whose sum is σ = 2273622830808. Its totient is φ = 1948819569240.

The previous prime is 2111221199981. The next prime is 2111221200031. The reversal of 2111221200023 is 3200021221112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111221200023 - 2¹² = 2111221195927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111221199974 and 2111221200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111221202023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81200815373 + ... + 81200815398.

It is an arithmetic number, because the mean of its divisors is an integer number (568405707702).

Almost surely, 2^{2111221200023} is an apocalyptic number.

2111221200023 is a deficient number, since it is larger than the sum of its proper divisors (162401630785).

2111221200023 is a wasteful number, since it uses less digits than its factorization.

2111221200023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162401630784.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2111221200023 its reverse (3200021221112), we get a palindrome (5311242421135).

The spelling of 2111221200023 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred thousand, twenty-three".