1201130121 has 16 divisors (see below), whose sum is σ = 1699790400. Its totient is φ = 751838208.

The previous prime is 1201130107. The next prime is 1201130143. The reversal of 1201130121 is 1210311021.

It is not a de Polignac number, because 1201130121 - 2⁶ = 1201130057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1201130097 and 1201130106.

It is not an unprimeable number, because it can be changed into a prime (1201130221) 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, 6736 + ... + 49473.

It is an arithmetic number, because the mean of its divisors is an integer number (106236900).

Almost surely, 2^1201130121 is an apocalyptic number.

It is an amenable number.

1201130121 is a deficient number, since it is larger than the sum of its proper divisors (498660279).

1201130121 is a wasteful number, since it uses less digits than its factorization.

1201130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56648.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1201130121 is about 34657.3242042717. The cubic root of 1201130121 is about 1062.9920569499.

Adding to 1201130121 its reverse (1210311021), we get a palindrome (2411441142).

Subtracting 1201130121 from its reverse (1210311021), we obtain a square (9180900 = 3030²).

The spelling of 1201130121 in words is "one billion, two hundred one million, one hundred thirty thousand, one hundred twenty-one".