2021000111010 has 24 divisors (see below), whose sum is σ = 5254600288860. Its totient is φ = 538933362912.

The previous prime is 2021000110999. The next prime is 2021000111023. The reversal of 2021000111010 is 101110001202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1862905603689 + 158094507321 = 1364883^2 + 397611^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2021000110983 and 2021000111001.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 11227778305 + ... + 11227778484.

Almost surely, 2^{2021000111010} is an apocalyptic number.

2021000111010 is an abundant number, since it is smaller than the sum of its proper divisors (3233600177850).

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

2021000111010 is a wasteful number, since it uses less digits than its factorization.

2021000111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22455556802 (or 22455556799 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2021000111010 its reverse (101110001202), we get a palindrome (2122110112212).

The spelling of 2021000111010 in words is "two trillion, twenty-one billion, one hundred eleven thousand, ten".