2021111200080 has 120 divisors (see below), whose sum is σ = 7757217292032. Its totient is φ = 461968273152.

The previous prime is 2021111200079. The next prime is 2021111200127. The reversal of 2021111200080 is 800021111202.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200502024 + ... + 200512103.

Almost surely, 2^{2021111200080} is an apocalyptic number.

2021111200080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021111200080 is an abundant number, since it is smaller than the sum of its proper divisors (5736106091952).

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

2021111200080 is a wasteful number, since it uses less digits than its factorization.

2021111200080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401014153 (or 401014144 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2021111200080 its reverse (800021111202), we get a palindrome (2821132311282).

The spelling of 2021111200080 in words is "two trillion, twenty-one billion, one hundred eleven million, two hundred thousand, eighty".