1000020212021 has 16 divisors (see below), whose sum is σ = 1021311244800. Its totient is φ = 978876150000.

The previous prime is 1000020211999. The next prime is 1000020212029. The reversal of 1000020212021 is 1202120200001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1000020212021 - 2³⁸ = 725142305077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000020211993 and 1000020212011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000020212029) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 68869400 + ... + 68883918.

It is an arithmetic number, because the mean of its divisors is an integer number (63831952800).

Almost surely, 2^{1000020212021} is an apocalyptic number.

It is an amenable number.

1000020212021 is a deficient number, since it is larger than the sum of its proper divisors (21291032779).

1000020212021 is a wasteful number, since it uses less digits than its factorization.

1000020212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19480.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000020212021 its reverse (1202120200001), we get a palindrome (2202140412022).

The spelling of 1000020212021 in words is "one trillion, twenty million, two hundred twelve thousand, twenty-one".