100102001000121 has 12 divisors (see below), whose sum is σ = 149947030305072. Its totient is φ = 66734667333252.

The previous prime is 100102001000107. The next prime is 100102001000273. The reversal of 100102001000121 is 121000100201001.

It is a happy number.

It is not a de Polignac number, because 100102001000121 - 2⁷ = 100102000999993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100102001000321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205971195231 + ... + 205971195716.

It is an arithmetic number, because the mean of its divisors is an integer number (12495585858756).

Almost surely, 2^{100102001000121} is an apocalyptic number.

It is an amenable number.

100102001000121 is a deficient number, since it is larger than the sum of its proper divisors (49845029304951).

100102001000121 is an frugal number, since it uses more digits than its factorization.

100102001000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411942390962 (or 411942390950 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100102001000121 its reverse (121000100201001), we get a palindrome (221102101201122).

The spelling of 100102001000121 in words is "one hundred trillion, one hundred two billion, one million, one hundred twenty-one", and thus it is an aban number.