21111021200002 has 16 divisors (see below), whose sum is σ = 31957256580480. Its totient is φ = 10458603589392.

The previous prime is 21111021199997. The next prime is 21111021200039. The reversal of 21111021200002 is 20000212011112.

It is a super-2 number, since 2×21111021200002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62100663 + ... + 62439685.

It is an arithmetic number, because the mean of its divisors is an integer number (1997328536280).

Almost surely, 2^{21111021200002} is an apocalyptic number.

21111021200002 is a deficient number, since it is larger than the sum of its proper divisors (10846235380478).

21111021200002 is a wasteful number, since it uses less digits than its factorization.

21111021200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624777.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21111021200002 its reverse (20000212011112), we get a palindrome (41111233211114).

The spelling of 21111021200002 in words is "twenty-one trillion, one hundred eleven billion, twenty-one million, two hundred thousand, two".