21112020000002 has 16 divisors (see below), whose sum is σ = 31736322858240. Its totient is φ = 10533246400368.

The previous prime is 21112019999981. The next prime is 21112020000007. The reversal of 21112020000002 is 20000002021112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21112020000007) 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, 83110328 + ... + 83363964.

It is an arithmetic number, because the mean of its divisors is an integer number (1983520178640).

Almost surely, 2^{21112020000002} is an apocalyptic number.

21112020000002 is a deficient number, since it is larger than the sum of its proper divisors (10624302858238).

21112020000002 is a wasteful number, since it uses less digits than its factorization.

21112020000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343225.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21112020000002 its reverse (20000002021112), we get a palindrome (41112022021114).

The spelling of 21112020000002 in words is "twenty-one trillion, one hundred twelve billion, twenty million, two", and thus it is an aban number.