2111001102121 has 4 divisors (see below), whose sum is σ = 2112990736644. Its totient is φ = 2109011467600.

The previous prime is 2111001102107. The next prime is 2111001102143. The reversal of 2111001102121 is 1212011001112.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1797637377600 + 313363724521 = 1340760^2 + 559789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111001102121 - 2²³ = 2110992713513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111001102151) 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, 994815670 + ... + 994817791.

It is an arithmetic number, because the mean of its divisors is an integer number (528247684161).

Almost surely, 2^{2111001102121} is an apocalyptic number.

It is an amenable number.

2111001102121 is a deficient number, since it is larger than the sum of its proper divisors (1989634523).

2111001102121 is a wasteful number, since it uses less digits than its factorization.

2111001102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989634522.

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

Adding to 2111001102121 its reverse (1212011001112), we get a palindrome (3323012103233).

It can be divided in two parts, 2111001 and 102121, that added together give a palindrome (2213122).

The spelling of 2111001102121 in words is "two trillion, one hundred eleven billion, one million, one hundred two thousand, one hundred twenty-one".