1201022121001 has 32 divisors (see below), whose sum is σ = 1328988672000. Its totient is φ = 1080294703488.

The previous prime is 1201022120999. The next prime is 1201022121011. The reversal of 1201022121001 is 1001212201021.

It is a cyclic number.

It is not a de Polignac number, because 1201022121001 - 2¹ = 1201022120999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201022121011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32672290 + ... + 32709028.

It is an arithmetic number, because the mean of its divisors is an integer number (41530896000).

Almost surely, 2^{1201022121001} is an apocalyptic number.

It is an amenable number.

1201022121001 is a deficient number, since it is larger than the sum of its proper divisors (127966550999).

1201022121001 is a wasteful number, since it uses less digits than its factorization.

1201022121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37333.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201022121001 its reverse (1001212201021), we get a palindrome (2202234322022).

The spelling of 1201022121001 in words is "one trillion, two hundred one billion, twenty-two million, one hundred twenty-one thousand, one".