20210101209988 has 12 divisors (see below), whose sum is σ = 36120180886272. Its totient is φ = 9890049528200.

The previous prime is 20210101209959. The next prime is 20210101209989. The reversal of 20210101209988 is 88990210101202.

It is not an unprimeable number, because it can be changed into a prime (20210101209989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53750268988 + ... + 53750269363.

It is an arithmetic number, because the mean of its divisors is an integer number (3010015073856).

Almost surely, 2^{20210101209988} is an apocalyptic number.

It is an amenable number.

20210101209988 is a deficient number, since it is larger than the sum of its proper divisors (15910079676284).

20210101209988 is a wasteful number, since it uses less digits than its factorization.

20210101209988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107500538402 (or 107500538400 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 20210101209988 in words is "twenty trillion, two hundred ten billion, one hundred one million, two hundred nine thousand, nine hundred eighty-eight".