7221020401 has 8 divisors (see below), whose sum is σ = 8444515904. Its totient is φ = 6045505200.

The previous prime is 7221020399. The next prime is 7221020413. The reversal of 7221020401 is 1040201227.

It is a happy number.

7221020401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7221020401 - 2¹ = 7221020399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221020431) 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, 11994750 + ... + 11995351.

It is an arithmetic number, because the mean of its divisors is an integer number (1055564488).

Almost surely, 2^7221020401 is an apocalyptic number.

It is an amenable number.

7221020401 is a deficient number, since it is larger than the sum of its proper divisors (1223495503).

7221020401 is a wasteful number, since it uses less digits than its factorization.

7221020401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23990151.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 7221020401 is about 84976.5873696985. The cubic root of 7221020401 is about 1932.8561076931.

Adding to 7221020401 its reverse (1040201227), we get a palindrome (8261221628).

The spelling of 7221020401 in words is "seven billion, two hundred twenty-one million, twenty thousand, four hundred one".