3530121243220 has 72 divisors (see below), whose sum is σ = 8757131412960. Its totient is φ = 1184935789440.

The previous prime is 3530121243211. The next prime is 3530121243227. The reversal of 3530121243220 is 223421210353.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3530121243227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47436210 + ... + 47510569.

It is an arithmetic number, because the mean of its divisors is an integer number (121626825180).

Almost surely, 2^{3530121243220} is an apocalyptic number.

It is an amenable number.

3530121243220 is an abundant number, since it is smaller than the sum of its proper divisors (5227010169740).

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

3530121243220 is a wasteful number, since it uses less digits than its factorization.

3530121243220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94946825 (or 94946810 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 3530121243220 its reverse (223421210353), we get a palindrome (3753542453573).

The spelling of 3530121243220 in words is "three trillion, five hundred thirty billion, one hundred twenty-one million, two hundred forty-three thousand, two hundred twenty".