210222200120121 has 24 divisors (see below), whose sum is σ = 347033904788480. Its totient is φ = 120126822106176.

The previous prime is 210222200120113. The next prime is 210222200120143. The reversal of 210222200120121 is 121021002222012.

It is a happy number.

210222200120121 is a `hidden beast` number, since 2 + 1 + 0 + 222 + 200 + 120 + 121 = 666.

It is not a de Polignac number, because 210222200120121 - 2³ = 210222200120113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210222200120094 and 210222200120103.

It is not an unprimeable number, because it can be changed into a prime (210222200120161) 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, 67195941 + ... + 70254813.

Almost surely, 2^{210222200120121} is an apocalyptic number.

210222200120121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210222200120121 is a deficient number, since it is larger than the sum of its proper divisors (136811704668359).

210222200120121 is a wasteful number, since it uses less digits than its factorization.

210222200120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149765 (or 4149762 counting only the distinct ones).

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

Adding to 210222200120121 its reverse (121021002222012), we get a palindrome (331243202342133).

The spelling of 210222200120121 in words is "two hundred ten trillion, two hundred twenty-two billion, two hundred million, one hundred twenty thousand, one hundred twenty-one".