2121002122111 has 8 divisors (see below), whose sum is σ = 2142052161984. Its totient is φ = 2099953063200.

The previous prime is 2121002122069. The next prime is 2121002122153. The reversal of 2121002122111 is 1112212001212.

It is an interprime number because it is at equal distance from previous prime (2121002122069) and next prime (2121002122153).

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 2121002122111 - 2⁹ = 2121002121599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121002122171) 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, 4566621 + ... + 5009593.

It is an arithmetic number, because the mean of its divisors is an integer number (267756520248).

Almost surely, 2^{2121002122111} is an apocalyptic number.

2121002122111 is a deficient number, since it is larger than the sum of its proper divisors (21050039873).

2121002122111 is a wasteful number, since it uses less digits than its factorization.

2121002122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490481.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121002122111 its reverse (1112212001212), we get a palindrome (3233214123323).

The spelling of 2121002122111 in words is "two trillion, one hundred twenty-one billion, two million, one hundred twenty-two thousand, one hundred eleven".