4001021022131 has 8 divisors (see below), whose sum is σ = 4615329991680. Its totient is φ = 3397395687048.

The previous prime is 4001021022113. The next prime is 4001021022139. The reversal of 4001021022131 is 1312201201004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4001021022131 is a prime.

It is a super-2 number, since 2×4001021022131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001021022139) 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, 2670907811 + ... + 2670909308.

It is an arithmetic number, because the mean of its divisors is an integer number (576916248960).

Almost surely, 2^{4001021022131} is an apocalyptic number.

4001021022131 is a deficient number, since it is larger than the sum of its proper divisors (614308969549).

4001021022131 is a wasteful number, since it uses less digits than its factorization.

4001021022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341817233.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 4001021022131 its reverse (1312201201004), we get a palindrome (5313222223135).

The spelling of 4001021022131 in words is "four trillion, one billion, twenty-one million, twenty-two thousand, one hundred thirty-one".