20211000001988 has 12 divisors (see below), whose sum is σ = 35369585909952. Its totient is φ = 10105404027720.

The previous prime is 20211000001981. The next prime is 20211000001993. The reversal of 20211000001988 is 88910000011202.

It is not an unprimeable number, because it can be changed into a prime (20211000001981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23518448 + ... + 24362663.

It is an arithmetic number, because the mean of its divisors is an integer number (2947465492496).

Almost surely, 2^{20211000001988} is an apocalyptic number.

It is an amenable number.

20211000001988 is a deficient number, since it is larger than the sum of its proper divisors (15158585907964).

20211000001988 is a wasteful number, since it uses less digits than its factorization.

20211000001988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47986642 (or 47986640 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 20211000001988 in words is "twenty trillion, two hundred eleven billion, one thousand, nine hundred eighty-eight".