401220442100220 has 48 divisors (see below), whose sum is σ = 1123718665187328. Its totient is φ = 106963410530880.

The previous prime is 401220442100201. The next prime is 401220442100221. The reversal of 401220442100220 is 22001244022104.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401220442100221) 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, 896879596 + ... + 897326835.

It is an arithmetic number, because the mean of its divisors is an integer number (23410805524736).

Almost surely, 2^{401220442100220} is an apocalyptic number.

It is an amenable number.

401220442100220 is an abundant number, since it is smaller than the sum of its proper divisors (722498223087108).

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

401220442100220 is a wasteful number, since it uses less digits than its factorization.

401220442100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794210170 (or 1794210168 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 401220442100220 its reverse (22001244022104), we get a palindrome (423221686122324).

The spelling of 401220442100220 in words is "four hundred one trillion, two hundred twenty billion, four hundred forty-two million, one hundred thousand, two hundred twenty".