221031321140130 has 64 divisors (see below), whose sum is σ = 538694678227968. Its totient is φ = 58029393850560.

The previous prime is 221031321140099. The next prime is 221031321140137. The reversal of 221031321140130 is 31041123130122.

221031321140130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221031321140130.

It is not an unprimeable number, because it can be changed into a prime (221031321140137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27253476 + ... + 34421135.

It is an arithmetic number, because the mean of its divisors is an integer number (8417104347312).

Almost surely, 2^{221031321140130} is an apocalyptic number.

221031321140130 is an abundant number, since it is smaller than the sum of its proper divisors (317663357087838).

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

221031321140130 is a wasteful number, since it uses less digits than its factorization.

221031321140130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61676471.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 221031321140130 its reverse (31041123130122), we get a palindrome (252072444270252).

The spelling of 221031321140130 in words is "two hundred twenty-one trillion, thirty-one billion, three hundred twenty-one million, one hundred forty thousand, one hundred thirty".