2121001313401 has 8 divisors (see below), whose sum is σ = 2130317970120. Its totient is φ = 2111685132288.

The previous prime is 2121001313341. The next prime is 2121001313429. The reversal of 2121001313401 is 1043131001212.

It can be written as a sum of positive squares in 4 ways, for example, as 489301649001 + 1631699664400 = 699501^2 + 1277380^2 .

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 2121001313401 - 2¹⁷ = 2121001182329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121001313441) 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, 11162745 + ... + 11351161.

It is an arithmetic number, because the mean of its divisors is an integer number (266289746265).

Almost surely, 2^{2121001313401} is an apocalyptic number.

It is an amenable number.

2121001313401 is a deficient number, since it is larger than the sum of its proper divisors (9316656719).

2121001313401 is a wasteful number, since it uses less digits than its factorization.

2121001313401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237803.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2121001313401 its reverse (1043131001212), we get a palindrome (3164132314613).

The spelling of 2121001313401 in words is "two trillion, one hundred twenty-one billion, one million, three hundred thirteen thousand, four hundred one".