401234123011 has 4 divisors (see below), whose sum is σ = 403033379392. Its totient is φ = 399434866632.

The previous prime is 401234122973. The next prime is 401234123023. The reversal of 401234123011 is 110321432104.

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 401234123011 - 2¹⁹ = 401233598723 is a prime.

It is a super-2 number, since 2×401234123011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401234123071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899627856 + ... + 899628301.

It is an arithmetic number, because the mean of its divisors is an integer number (100758344848).

Almost surely, 2^401234123011 is an apocalyptic number.

401234123011 is a deficient number, since it is larger than the sum of its proper divisors (1799256381).

401234123011 is a wasteful number, since it uses less digits than its factorization.

401234123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799256380.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 401234123011 its reverse (110321432104), we get a palindrome (511555555115).

The spelling of 401234123011 in words is "four hundred one billion, two hundred thirty-four million, one hundred twenty-three thousand, eleven".