102002120221111 has 32 divisors (see below), whose sum is σ = 112819041054720. Its totient is φ = 91454188665600.

The previous prime is 102002120221103. The next prime is 102002120221117. The reversal of 102002120221111 is 111122021200201.

It is a cyclic number.

It is not a de Polignac number, because 102002120221111 - 2³ = 102002120221103 is a prime.

It is a super-4 number, since 4×102002120221111⁴ (a number of 57 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002120221117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116333395 + ... + 117206923.

It is an arithmetic number, because the mean of its divisors is an integer number (3525595032960).

Almost surely, 2^{102002120221111} is an apocalyptic number.

102002120221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102002120221111 is a deficient number, since it is larger than the sum of its proper divisors (10816920833609).

102002120221111 is a wasteful number, since it uses less digits than its factorization.

102002120221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874207.

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

Adding to 102002120221111 its reverse (111122021200201), we get a palindrome (213124141421312).

The spelling of 102002120221111 in words is "one hundred two trillion, two billion, one hundred twenty million, two hundred twenty-one thousand, one hundred eleven".