401331432412220 has 48 divisors (see below), whose sum is σ = 843193276148160. Its totient is φ = 160456906381824.

The previous prime is 401331432412219. The next prime is 401331432412249. The reversal of 401331432412220 is 22214234133104.

It is a happy number.

It is a super-2 number, since 2×401331432412220² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2456994392 + ... + 2457157728.

It is an arithmetic number, because the mean of its divisors is an integer number (17566526586420).

Almost surely, 2^{401331432412220} is an apocalyptic number.

It is an amenable number.

401331432412220 is an abundant number, since it is smaller than the sum of its proper divisors (441861843735940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401331432412220 is a wasteful number, since it uses less digits than its factorization.

401331432412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220502 (or 220500 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 401331432412220 its reverse (22214234133104), we get a palindrome (423545666545324).

The spelling of 401331432412220 in words is "four hundred one trillion, three hundred thirty-one billion, four hundred thirty-two million, four hundred twelve thousand, two hundred twenty".