210022221121 has 8 divisors (see below), whose sum is σ = 210510316800. Its totient is φ = 209534406432.

The previous prime is 210022221113. The next prime is 210022221133. The reversal of 210022221121 is 121122220012.

It is a happy number.

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 210022221121 - 2³ = 210022221113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210022221095 and 210022221104.

It is not an unprimeable number, because it can be changed into a prime (210022261121) 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, 1465176 + ... + 1602118.

It is an arithmetic number, because the mean of its divisors is an integer number (26313789600).

Almost surely, 2^210022221121 is an apocalyptic number.

It is an amenable number.

210022221121 is a deficient number, since it is larger than the sum of its proper divisors (488095679).

210022221121 is a wasteful number, since it uses less digits than its factorization.

210022221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140495.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210022221121 its reverse (121122220012), we get a palindrome (331144441133).

The spelling of 210022221121 in words is "two hundred ten billion, twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".