102001112210121 has 32 divisors (see below), whose sum is σ = 141245325803520. Its totient is φ = 65405968992000.

The previous prime is 102001112210087. The next prime is 102001112210131. The reversal of 102001112210121 is 121012211100201.

It is a happy number.

It is not a de Polignac number, because 102001112210121 - 2¹⁷ = 102001112079049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102001112210121.

It is not an unprimeable number, because it can be changed into a prime (102001112210131) 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, 30908001 + ... + 34048593.

It is an arithmetic number, because the mean of its divisors is an integer number (4413916431360).

Almost surely, 2^{102001112210121} is an apocalyptic number.

It is an amenable number.

102001112210121 is a deficient number, since it is larger than the sum of its proper divisors (39244213593399).

102001112210121 is a wasteful number, since it uses less digits than its factorization.

102001112210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142757.

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

Adding to 102001112210121 its reverse (121012211100201), we get a palindrome (223013323310322).

The spelling of 102001112210121 in words is "one hundred two trillion, one billion, one hundred twelve million, two hundred ten thousand, one hundred twenty-one".