7221204901504 has 128 divisors (see below), whose sum is σ = 16654010832000. Its totient is φ = 3082400563200.

The previous prime is 7221204901489. The next prime is 7221204901543. The reversal of 7221204901504 is 4051094021227.

It is a tau number, because it is divible by the number of its divisors (128).

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, 10411309 + ... + 11083219.

It is an arithmetic number, because the mean of its divisors is an integer number (130109459625).

Almost surely, 2^{7221204901504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7221204901504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8327005416000).

7221204901504 is an abundant number, since it is smaller than the sum of its proper divisors (9432805930496).

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

7221204901504 is a wasteful number, since it uses less digits than its factorization.

7221204901504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672402 (or 672390 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 7221204901504 in words is "seven trillion, two hundred twenty-one billion, two hundred four million, nine hundred one thousand, five hundred four".