102120100121 has 16 divisors (see below), whose sum is σ = 116455828608. Its totient is φ = 88711200000.

The previous prime is 102120100067. The next prime is 102120100151. The reversal of 102120100121 is 121001021201.

It is a cyclic number.

It is not a de Polignac number, because 102120100121 - 2⁶ = 102120100057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102120100151) 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, 3665996 + ... + 3693746.

It is an arithmetic number, because the mean of its divisors is an integer number (7278489288).

Almost surely, 2^102120100121 is an apocalyptic number.

It is an amenable number.

102120100121 is a deficient number, since it is larger than the sum of its proper divisors (14335728487).

102120100121 is a wasteful number, since it uses less digits than its factorization.

102120100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44432.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102120100121 its reverse (121001021201), we get a palindrome (223121121322).

The spelling of 102120100121 in words is "one hundred two billion, one hundred twenty million, one hundred thousand, one hundred twenty-one".