2122021121111 has 8 divisors (see below), whose sum is σ = 2127599174064. Its totient is φ = 2116444239360.

The previous prime is 2122021121107. The next prime is 2122021121117. The reversal of 2122021121111 is 1111211202212.

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 2122021121111 - 2² = 2122021121107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2122021121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122021121117) 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, 3396596 + ... + 3972518.

It is an arithmetic number, because the mean of its divisors is an integer number (265949896758).

Almost surely, 2^{2122021121111} is an apocalyptic number.

2122021121111 is a deficient number, since it is larger than the sum of its proper divisors (5578052953).

2122021121111 is an equidigital number, since it uses as much as digits as its factorization.

2122021121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585601.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2122021121111 its reverse (1111211202212), we get a palindrome (3233232323323).

The spelling of 2122021121111 in words is "two trillion, one hundred twenty-two billion, twenty-one million, one hundred twenty-one thousand, one hundred eleven".