20210111021208 has 64 divisors (see below), whose sum is σ = 50591397600000. Its totient is φ = 6727892383872.

The previous prime is 20210111021201. The next prime is 20210111021237. The reversal of 20210111021208 is 80212011101202.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 69305293 + ... + 69596291.

It is an arithmetic number, because the mean of its divisors is an integer number (790490587500).

Almost surely, 2^{20210111021208} is an apocalyptic number.

It is an amenable number.

20210111021208 is an abundant number, since it is smaller than the sum of its proper divisors (30381286578792).

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

20210111021208 is a wasteful number, since it uses less digits than its factorization.

20210111021208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294784 (or 294780 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

The spelling of 20210111021208 in words is "twenty trillion, two hundred ten billion, one hundred eleven million, twenty-one thousand, two hundred eight".