2210001001021 has 32 divisors (see below), whose sum is σ = 2561640681600. Its totient is φ = 1885552865280.

The previous prime is 2210001001009. The next prime is 2210001001037. The reversal of 2210001001021 is 1201001000122.

It is a cyclic number.

It is not a de Polignac number, because 2210001001021 - 2²³ = 2209992612413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210001000989 and 2210001001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210001001421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9478125 + ... + 9708493.

It is an arithmetic number, because the mean of its divisors is an integer number (80051271300).

Almost surely, 2^{2210001001021} is an apocalyptic number.

It is an amenable number.

2210001001021 is a deficient number, since it is larger than the sum of its proper divisors (351639680579).

2210001001021 is a wasteful number, since it uses less digits than its factorization.

2210001001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230829.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2210001001021 its reverse (1201001000122), we get a palindrome (3411002001143).

The spelling of 2210001001021 in words is "two trillion, two hundred ten billion, one million, one thousand, twenty-one".