102120220000121 has 16 divisors (see below), whose sum is σ = 115189505524800. Its totient is φ = 89957518553088.

The previous prime is 102120220000111. The next prime is 102120220000157. The reversal of 102120220000121 is 121000022021201.

It is not a de Polignac number, because 102120220000121 - 2¹⁴ = 102120219983737 is a prime.

It is a super-2 number, since 2×102120220000121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120220000096 and 102120220000105.

It is not an unprimeable number, because it can be changed into a prime (102120220000111) 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, 1904561576 + ... + 1904615193.

It is an arithmetic number, because the mean of its divisors is an integer number (7199344095300).

Almost surely, 2^{102120220000121} is an apocalyptic number.

It is an amenable number.

102120220000121 is a deficient number, since it is larger than the sum of its proper divisors (13069285524679).

102120220000121 is a wasteful number, since it uses less digits than its factorization.

102120220000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809176888.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102120220000121 its reverse (121000022021201), we get a palindrome (223120242021322).

The spelling of 102120220000121 in words is "one hundred two trillion, one hundred twenty billion, two hundred twenty million, one hundred twenty-one", and thus it is an aban number.