400020131242111 has 8 divisors (see below), whose sum is σ = 400355550673184. Its totient is φ = 399684715718400.

The previous prime is 400020131242097. The next prime is 400020131242141. The reversal of 400020131242111 is 111242131020004.

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 400020131242111 - 2¹⁵ = 400020131209343 is a prime.

It is a super-2 number, since 2×400020131242111² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400020131242141) 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, 225935446 + ... + 227699068.

It is an arithmetic number, because the mean of its divisors is an integer number (50044443834148).

Almost surely, 2^{400020131242111} is an apocalyptic number.

400020131242111 is a deficient number, since it is larger than the sum of its proper divisors (335419431073).

400020131242111 is a wasteful number, since it uses less digits than its factorization.

400020131242111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953681.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 400020131242111 its reverse (111242131020004), we get a palindrome (511262262262115).

The spelling of 400020131242111 in words is "four hundred trillion, twenty billion, one hundred thirty-one million, two hundred forty-two thousand, one hundred eleven".