2131221030 has 16 divisors (see below), whose sum is σ = 5114930544. Its totient is φ = 568325600.

The previous prime is 2131221011. The next prime is 2131221061. The reversal of 2131221030 is 301221312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35520321 + ... + 35520380.

It is an arithmetic number, because the mean of its divisors is an integer number (319683159).

Almost surely, 2^2131221030 is an apocalyptic number.

2131221030 is an abundant number, since it is smaller than the sum of its proper divisors (2983709514).

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

2131221030 is a wasteful number, since it uses less digits than its factorization.

2131221030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71040711.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2131221030 is about 46165.1495177910. The cubic root of 2131221030 is about 1286.8941628249.

Adding to 2131221030 its reverse (301221312), we get a palindrome (2432442342).

The spelling of 2131221030 in words is "two billion, one hundred thirty-one million, two hundred twenty-one thousand, thirty".