121001101020001 has 8 divisors (see below), whose sum is σ = 122438750031360. Its totient is φ = 119565187255008.

The previous prime is 121001101019989. The next prime is 121001101020029. The reversal of 121001101020001 is 100020101100121.

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 121001101020001 - 2²⁷ = 121000966802273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121001101020001.

It is not an unprimeable number, because it can be changed into a prime (121001101020061) 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, 433671301 + ... + 433950226.

It is an arithmetic number, because the mean of its divisors is an integer number (15304843753920).

Almost surely, 2^{121001101020001} is an apocalyptic number.

It is an amenable number.

121001101020001 is a deficient number, since it is larger than the sum of its proper divisors (1437649011359).

121001101020001 is an equidigital number, since it uses as much as digits as its factorization.

121001101020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867623183.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121001101020001 its reverse (100020101100121), we get a palindrome (221021202120122).

The spelling of 121001101020001 in words is "one hundred twenty-one trillion, one billion, one hundred one million, twenty thousand, one".