210212222022121 has 12 divisors (see below), whose sum is σ = 242027267464944. Its totient is φ = 181044018963000.

The previous prime is 210212222022107. The next prime is 210212222022133. The reversal of 210212222022121 is 121220222212012.

It is not a de Polignac number, because 210212222022121 - 2⁹ = 210212222021609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210212222022092 and 210212222022101.

It is not an unprimeable number, because it can be changed into a prime (210212222022191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26468419855 + ... + 26468427796.

It is an arithmetic number, because the mean of its divisors is an integer number (20168938955412).

Almost surely, 2^{210212222022121} is an apocalyptic number.

It is an amenable number.

210212222022121 is a deficient number, since it is larger than the sum of its proper divisors (31815045442823).

210212222022121 is a wasteful number, since it uses less digits than its factorization.

210212222022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52936847700 (or 52936847681 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 210212222022121 its reverse (121220222212012), we get a palindrome (331432444234133).

The spelling of 210212222022121 in words is "two hundred ten trillion, two hundred twelve billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-one".