102111000210121 has 16 divisors (see below), whose sum is σ = 119125645221888. Its totient is φ = 85719522546000.

The previous prime is 102111000210071. The next prime is 102111000210161. The reversal of 102111000210121 is 121012000111201.

It is a happy number.

It is not a de Polignac number, because 102111000210121 - 2¹⁹ = 102110999685833 is a prime.

It is a super-2 number, since 2×102111000210121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102111000210161) 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, 680238625 + ... + 680388718.

It is an arithmetic number, because the mean of its divisors is an integer number (7445352826368).

Almost surely, 2^{102111000210121} is an apocalyptic number.

It is an amenable number.

102111000210121 is a deficient number, since it is larger than the sum of its proper divisors (17014645011767).

102111000210121 is a wasteful number, since it uses less digits than its factorization.

102111000210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360627572.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102111000210121 its reverse (121012000111201), we get a palindrome (223123000321322).

The spelling of 102111000210121 in words is "one hundred two trillion, one hundred eleven billion, two hundred ten thousand, one hundred twenty-one".