21100112311002 has 16 divisors (see below), whose sum is σ = 42200449213440. Its totient is φ = 7033333338432.

The previous prime is 21100112311001. The next prime is 21100112311111. The reversal of 21100112311002 is 20011321100112.

It is a super-2 number, since 2×21100112311002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21100112311001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8124127 + ... + 10402002.

It is an arithmetic number, because the mean of its divisors is an integer number (2637528075840).

Almost surely, 2^{21100112311002} is an apocalyptic number.

21100112311002 is an abundant number, since it is smaller than the sum of its proper divisors (21100336902438).

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

21100112311002 is a wasteful number, since it uses less digits than its factorization.

21100112311002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18715957.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21100112311002 its reverse (20011321100112), we get a palindrome (41111433411114).

The spelling of 21100112311002 in words is "twenty-one trillion, one hundred billion, one hundred twelve million, three hundred eleven thousand, two".