401277434221 has 16 divisors (see below), whose sum is σ = 423228153600. Its totient is φ = 379410248448.

The previous prime is 401277434197. The next prime is 401277434231. The reversal of 401277434221 is 122434772104.

It is a cyclic number.

It is not a de Polignac number, because 401277434221 - 2⁹ = 401277433709 is a prime.

It is a super-2 number, since 2×401277434221² (a number of 24 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 (401277434231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59068801 + ... + 59075593.

It is an arithmetic number, because the mean of its divisors is an integer number (26451759600).

Almost surely, 2^401277434221 is an apocalyptic number.

It is an amenable number.

401277434221 is a deficient number, since it is larger than the sum of its proper divisors (21950719379).

401277434221 is a wasteful number, since it uses less digits than its factorization.

401277434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12468.

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 401277434221 in words is "four hundred one billion, two hundred seventy-seven million, four hundred thirty-four thousand, two hundred twenty-one".