231022221130 has 32 divisors (see below), whose sum is σ = 438596726400. Its totient is φ = 87371180352.

The previous prime is 231022221119. The next prime is 231022221137. The reversal of 231022221130 is 31122220132.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 231022221098 and 231022221107.

It is not an unprimeable number, because it can be changed into a prime (231022221137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1113085 + ... + 1304224.

It is an arithmetic number, because the mean of its divisors is an integer number (13706147700).

Almost surely, 2^231022221130 is an apocalyptic number.

231022221130 is a deficient number, since it is larger than the sum of its proper divisors (207574505270).

231022221130 is a wasteful number, since it uses less digits than its factorization.

231022221130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417838.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231022221130 its reverse (31122220132), we get a palindrome (262144441262).

The spelling of 231022221130 in words is "two hundred thirty-one billion, twenty-two million, two hundred twenty-one thousand, one hundred thirty".