21030131101100 has 36 divisors (see below), whose sum is σ = 49784055809208. Its totient is φ = 7647320400000.

The previous prime is 21030131101097. The next prime is 21030131101117. The reversal of 21030131101100 is 110113103012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9559149401 + ... + 9559151600.

Almost surely, 2^{21030131101100} is an apocalyptic number.

21030131101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030131101100 is an abundant number, since it is smaller than the sum of its proper divisors (28753924708108).

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

21030131101100 is a wasteful number, since it uses less digits than its factorization.

21030131101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19118301026 (or 19118301019 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 21030131101100 its reverse (110113103012), we get a palindrome (21140244204112).

The spelling of 21030131101100 in words is "twenty-one trillion, thirty billion, one hundred thirty-one million, one hundred one thousand, one hundred".