20212020000021 has 8 divisors (see below), whose sum is σ = 27062118829440. Its totient is φ = 13418300585312.

The previous prime is 20212019999893. The next prime is 20212020000043. The reversal of 20212020000021 is 12000002021202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20212020000021 - 2⁷ = 20212019999893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212019999961 and 20212020000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212020000091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14094852840 + ... + 14094854273.

It is an arithmetic number, because the mean of its divisors is an integer number (3382764853680).

Almost surely, 2^{20212020000021} is an apocalyptic number.

It is an amenable number.

20212020000021 is a deficient number, since it is larger than the sum of its proper divisors (6850098829419).

20212020000021 is a wasteful number, since it uses less digits than its factorization.

20212020000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28189707355.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20212020000021 its reverse (12000002021202), we get a palindrome (32212022021223).

The spelling of 20212020000021 in words is "twenty trillion, two hundred twelve billion, twenty million, twenty-one", and thus it is an aban number.