1030120123121 has 16 divisors (see below), whose sum is σ = 1069028812800. Its totient is φ = 991574827200.

The previous prime is 1030120123111. The next prime is 1030120123139. The reversal of 1030120123121 is 1213210210301.

It is a cyclic number.

It is not a de Polignac number, because 1030120123121 - 2⁶ = 1030120123057 is a prime.

It is a super-4 number, since 4×1030120123121⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1030120123121.

It is not an unprimeable number, because it can be changed into a prime (1030120123111) 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, 7306031 + ... + 7445691.

It is an arithmetic number, because the mean of its divisors is an integer number (66814300800).

Almost surely, 2^{1030120123121} is an apocalyptic number.

It is an amenable number.

1030120123121 is a deficient number, since it is larger than the sum of its proper divisors (38908689679).

1030120123121 is a wasteful number, since it uses less digits than its factorization.

1030120123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140960.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1030120123121 its reverse (1213210210301), we get a palindrome (2243330333422).

The spelling of 1030120123121 in words is "one trillion, thirty billion, one hundred twenty million, one hundred twenty-three thousand, one hundred twenty-one".