2210021001 has 6 divisors (see below), whose sum is σ = 3192252570. Its totient is φ = 1473347328.

The previous prime is 2210020999. The next prime is 2210021003. The reversal of 2210021001 is 1001200122.

2210021001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2210020999) and next prime (2210021003).

It can be written as a sum of positive squares in only one way, i.e., 2205711225 + 4309776 = 46965^2 + 2076^2 .

It is not a de Polignac number, because 2210021001 - 2¹ = 2210020999 is a prime.

It is a super-2 number, since 2×2210021001² = 9768385649722084002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 245557889 = 2210021001 / (2 + 2 + 1 + 0 + 0 + 2 + 1 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (2210021003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122778936 + ... + 122778953.

It is an arithmetic number, because the mean of its divisors is an integer number (532042095).

Almost surely, 2^2210021001 is an apocalyptic number.

It is an amenable number.

2210021001 is a deficient number, since it is larger than the sum of its proper divisors (982231569).

2210021001 is a wasteful number, since it uses less digits than its factorization.

2210021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245557895 (or 245557892 counting only the distinct ones).

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

The square root of 2210021001 is about 47010.8604579835. The cubic root of 2210021001 is about 1302.5631876586.

Adding to 2210021001 its reverse (1001200122), we get a palindrome (3211221123).

The spelling of 2210021001 in words is "two billion, two hundred ten million, twenty-one thousand, one".