120420221004 has 72 divisors (see below), whose sum is σ = 322609564368. Its totient is φ = 37742745600.

The previous prime is 120420220961. The next prime is 120420221027. The reversal of 120420221004 is 400122024021.

120420221004 is a `hidden beast` number, since 1 + 20 + 420 + 221 + 0 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549604 + ... + 736820.

It is an arithmetic number, because the mean of its divisors is an integer number (4480688394).

Almost surely, 2^120420221004 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 120420221004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161304782184).

120420221004 is an abundant number, since it is smaller than the sum of its proper divisors (202189343364).

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

120420221004 is a wasteful number, since it uses less digits than its factorization.

120420221004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188295 (or 188290 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 120420221004 its reverse (400122024021), we get a palindrome (520542245025).

The spelling of 120420221004 in words is "one hundred twenty billion, four hundred twenty million, two hundred twenty-one thousand, four".