21112111010002 has 32 divisors (see below), whose sum is σ = 32623391775744. Its totient is φ = 10240978986000.

The previous prime is 21112111009991. The next prime is 21112111010077. The reversal of 21112111010002 is 20001011121112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106009123 + ... + 106208089.

It is an arithmetic number, because the mean of its divisors is an integer number (1019480992992).

Almost surely, 2^{21112111010002} is an apocalyptic number.

21112111010002 is a deficient number, since it is larger than the sum of its proper divisors (11511280765742).

21112111010002 is a wasteful number, since it uses less digits than its factorization.

21112111010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207334.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21112111010002 its reverse (20001011121112), we get a palindrome (41113122131114).

It can be divided in two parts, 211121110 and 10002, that added together give a palindrome (211131112).

The spelling of 21112111010002 in words is "twenty-one trillion, one hundred twelve billion, one hundred eleven million, ten thousand, two".