121201201022001 has 16 divisors (see below), whose sum is σ = 165364745145600. Its totient is φ = 78919341676560.

The previous prime is 121201201021993. The next prime is 121201201022009. The reversal of 121201201022001 is 100220102102121.

It is an interprime number because it is at equal distance from previous prime (121201201021993) and next prime (121201201022009).

It is not a de Polignac number, because 121201201022001 - 2³ = 121201201021993 is a prime.

It is a super-2 number, since 2×121201201022001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121201201022009) 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, 9794451 + ... + 18393848.

It is an arithmetic number, because the mean of its divisors is an integer number (10335296571600).

Almost surely, 2^{121201201022001} is an apocalyptic number.

It is an amenable number.

121201201022001 is a deficient number, since it is larger than the sum of its proper divisors (44163544123599).

121201201022001 is a wasteful number, since it uses less digits than its factorization.

121201201022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28221676.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201201022001 its reverse (100220102102121), we get a palindrome (221421303124122).

The spelling of 121201201022001 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred one million, twenty-two thousand, one".