4001020101231 has 4 divisors (see below), whose sum is σ = 5334693468312. Its totient is φ = 2667346734152.

The previous prime is 4001020101193. The next prime is 4001020101259. The reversal of 4001020101231 is 1321010201004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4001020101231 - 2⁶ = 4001020101167 is a prime.

It is a super-2 number, since 2×4001020101231² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4001020101231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001020101131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666836683536 + ... + 666836683541.

It is an arithmetic number, because the mean of its divisors is an integer number (1333673367078).

Almost surely, 2^{4001020101231} is an apocalyptic number.

4001020101231 is a deficient number, since it is larger than the sum of its proper divisors (1333673367081).

4001020101231 is a wasteful number, since it uses less digits than its factorization.

4001020101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333673367080.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 4001020101231 its reverse (1321010201004), we get a palindrome (5322030302235).

The spelling of 4001020101231 in words is "four trillion, one billion, twenty million, one hundred one thousand, two hundred thirty-one".