2021210000001 has 24 divisors (see below), whose sum is σ = 2922602283744. Its totient is φ = 1346054051520.

The previous prime is 2021209999997. The next prime is 2021210000021. The reversal of 2021210000001 is 1000000121202.

It is not a de Polignac number, because 2021210000001 - 2² = 2021209999997 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (2021210000021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34689445 + ... + 34747661.

It is an arithmetic number, because the mean of its divisors is an integer number (121775095156).

Almost surely, 2^{2021210000001} is an apocalyptic number.

It is an amenable number.

2021210000001 is a deficient number, since it is larger than the sum of its proper divisors (901392283743).

2021210000001 is a wasteful number, since it uses less digits than its factorization.

2021210000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62221 (or 62218 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2021210000001 its reverse (1000000121202), we get a palindrome (3021210121203).

The spelling of 2021210000001 in words is "two trillion, twenty-one billion, two hundred ten million, one", and thus it is an aban number.