1012001212121 has 16 divisors (see below), whose sum is σ = 1046223940608. Its totient is φ = 977877964800.

The previous prime is 1012001212111. The next prime is 1012001212127. The reversal of 1012001212121 is 1212121002101.

It is a cyclic number.

It is not a de Polignac number, because 1012001212121 - 2²² = 1011997017817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012001212096 and 1012001212105.

It is not an unprimeable number, because it can be changed into a prime (1012001212127) 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, 98505641 + ... + 98515913.

It is an arithmetic number, because the mean of its divisors is an integer number (65388996288).

Almost surely, 2^{1012001212121} is an apocalyptic number.

It is an amenable number.

1012001212121 is a deficient number, since it is larger than the sum of its proper divisors (34222728487).

1012001212121 is a wasteful number, since it uses less digits than its factorization.

1012001212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14792.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012001212121 its reverse (1212121002101), we get a palindrome (2224122214222).

The spelling of 1012001212121 in words is "one trillion, twelve billion, one million, two hundred twelve thousand, one hundred twenty-one".