2102121210111 has 8 divisors (see below), whose sum is σ = 3018430455600. Its totient is φ = 1293613052352.

The previous prime is 2102121210103. The next prime is 2102121210131. The reversal of 2102121210111 is 1110121212012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2102121210111 - 2³ = 2102121210103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102121210131) 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, 26950271886 + ... + 26950271963.

It is an arithmetic number, because the mean of its divisors is an integer number (377303806950).

Almost surely, 2^{2102121210111} is an apocalyptic number.

2102121210111 is a deficient number, since it is larger than the sum of its proper divisors (916309245489).

2102121210111 is a wasteful number, since it uses less digits than its factorization.

2102121210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53900543865.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2102121210111 its reverse (1110121212012), we get a palindrome (3212242422123).

The spelling of 2102121210111 in words is "two trillion, one hundred two billion, one hundred twenty-one million, two hundred ten thousand, one hundred eleven".