7421221104 has 160 divisors (see below), whose sum is σ = 21747536640. Its totient is φ = 2160076800.

The previous prime is 7421221069. The next prime is 7421221127. The reversal of 7421221104 is 4011221247.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3229684 + ... + 3231980.

It is an arithmetic number, because the mean of its divisors is an integer number (135922104).

Almost surely, 2^7421221104 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 7421221104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10873768320).

7421221104 is an abundant number, since it is smaller than the sum of its proper divisors (14326315536).

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

7421221104 is a wasteful number, since it uses less digits than its factorization.

7421221104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559 (or 2553 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 7421221104 is about 86146.5095288254. The cubic root of 7421221104 is about 1950.5561511636.

The spelling of 7421221104 in words is "seven billion, four hundred twenty-one million, two hundred twenty-one thousand, one hundred four".