1012201212121 has 8 divisors (see below), whose sum is σ = 1104289506144. Its totient is φ = 920124585120.

The previous prime is 1012201212091. The next prime is 1012201212131. The reversal of 1012201212121 is 1212121022101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012201212121 - 2⁵ = 1012201212089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012201212095 and 1012201212104.

It is not an unprimeable number, because it can be changed into a prime (1012201212131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2734855 + ... + 3082828.

It is an arithmetic number, because the mean of its divisors is an integer number (138036188268).

Almost surely, 2^{1012201212121} is an apocalyptic number.

1012201212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012201212121 is a deficient number, since it is larger than the sum of its proper divisors (92088294023).

1012201212121 is a wasteful number, since it uses less digits than its factorization.

1012201212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5833511.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1012201212121 its reverse (1212121022101), we get a palindrome (2224322234222).

The spelling of 1012201212121 in words is "one trillion, twelve billion, two hundred one million, two hundred twelve thousand, one hundred twenty-one".