102121200111 has 16 divisors (see below), whose sum is σ = 155900914688. Its totient is φ = 58247100000.

The previous prime is 102121200109. The next prime is 102121200119. The reversal of 102121200111 is 111002121201.

It is not a de Polignac number, because 102121200111 - 2¹ = 102121200109 is a prime.

It is a super-2 number, since 2×102121200111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121200119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4483015 + ... + 4505736.

It is an arithmetic number, because the mean of its divisors is an integer number (9743807168).

Almost surely, 2^102121200111 is an apocalyptic number.

102121200111 is a deficient number, since it is larger than the sum of its proper divisors (53779714577).

102121200111 is an equidigital number, since it uses as much as digits as its factorization.

102121200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989302.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102121200111 its reverse (111002121201), we get a palindrome (213123321312).

The spelling of 102121200111 in words is "one hundred two billion, one hundred twenty-one million, two hundred thousand, one hundred eleven".