20210111021200 has 60 divisors (see below), whose sum is σ = 50121075363328. Its totient is φ = 7823268777600.

The previous prime is 20210111021197. The next prime is 20210111021201. The reversal of 20210111021200 is 212011101202.

It is not an unprimeable number, because it can be changed into a prime (20210111021201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 814911432 + ... + 814936231.

Almost surely, 2^{20210111021200} is an apocalyptic number.

20210111021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210111021200 is an abundant number, since it is smaller than the sum of its proper divisors (29910964342128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20210111021200 is a wasteful number, since it uses less digits than its factorization.

20210111021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629847712 (or 1629847701 counting only the distinct ones).

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

Adding to 20210111021200 its reverse (212011101202), we get a palindrome (20422122122402).

The spelling of 20210111021200 in words is "twenty trillion, two hundred ten billion, one hundred eleven million, twenty-one thousand, two hundred".