1201001012121 has 8 divisors (see below), whose sum is σ = 1605795226560. Its totient is φ = 798437069552.

The previous prime is 1201001012083. The next prime is 1201001012177. The reversal of 1201001012121 is 1212101001021.

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 1201001012121 - 2⁷ = 1201001011993 is a prime.

It is a super-2 number, since 2×1201001012121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201001012097 and 1201001012106.

It is not an unprimeable number, because it can be changed into a prime (1201001012621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557566710 + ... + 557568863.

It is an arithmetic number, because the mean of its divisors is an integer number (200724403320).

Almost surely, 2^{1201001012121} is an apocalyptic number.

It is an amenable number.

1201001012121 is a deficient number, since it is larger than the sum of its proper divisors (404794214439).

1201001012121 is a wasteful number, since it uses less digits than its factorization.

1201001012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115135935.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1201001012121 its reverse (1212101001021), we get a palindrome (2413102013142).

The spelling of 1201001012121 in words is "one trillion, two hundred one billion, one million, twelve thousand, one hundred twenty-one".