210110022222021 has 24 divisors (see below), whose sum is σ = 305534806395000. Its totient is φ = 139130666831232.

The previous prime is 210110022222019. The next prime is 210110022222041. The reversal of 210110022222021 is 120222220011012.

It is a happy number.

210110022222021 is a `hidden beast` number, since 2 + 101 + 100 + 222 + 220 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14505015017025 + 195605007204996 = 3808545^2 + 13985886^2 .

It is not a de Polignac number, because 210110022222021 - 2¹ = 210110022222019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210110022221985 and 210110022222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210110022222041) 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, 71932815 + ... + 74796723.

It is an arithmetic number, because the mean of its divisors is an integer number (12730616933125).

Almost surely, 2^{210110022222021} is an apocalyptic number.

It is an amenable number.

210110022222021 is a deficient number, since it is larger than the sum of its proper divisors (95424784172979).

210110022222021 is a wasteful number, since it uses less digits than its factorization.

210110022222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918773 (or 2918770 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210110022222021 its reverse (120222220011012), we get a palindrome (330332242233033).

The spelling of 210110022222021 in words is "two hundred ten trillion, one hundred ten billion, twenty-two million, two hundred twenty-two thousand, twenty-one".