21101231232330 has 32 divisors (see below), whose sum is σ = 50643174153600. Its totient is φ = 5626970640192.

The previous prime is 21101231232283. The next prime is 21101231232331. The reversal of 21101231232330 is 3323213210112.

It is a self number, because there is not a number n which added to its sum of digits gives 21101231232330.

It is not an unprimeable number, because it can be changed into a prime (21101231232331) 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, 6160116 + ... + 8952624.

It is an arithmetic number, because the mean of its divisors is an integer number (1582599192300).

Almost surely, 2^{21101231232330} is an apocalyptic number.

21101231232330 is an abundant number, since it is smaller than the sum of its proper divisors (29541942921270).

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

21101231232330 is a wasteful number, since it uses less digits than its factorization.

21101231232330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044398.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21101231232330 its reverse (3323213210112), we get a palindrome (24424444442442).

The spelling of 21101231232330 in words is "twenty-one trillion, one hundred one billion, two hundred thirty-one million, two hundred thirty-two thousand, three hundred thirty".