1210010022121 has 4 divisors (see below), whose sum is σ = 1210216197700. Its totient is φ = 1209803846544.

The previous prime is 1210010022113. The next prime is 1210010022157. The reversal of 1210010022121 is 1212200100121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 766535270400 + 443474751721 = 875520^2 + 665939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210010022121 - 2³ = 1210010022113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210010022101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103078986 + ... + 103090723.

It is an arithmetic number, because the mean of its divisors is an integer number (302554049425).

Almost surely, 2^{1210010022121} is an apocalyptic number.

It is an amenable number.

1210010022121 is a deficient number, since it is larger than the sum of its proper divisors (206175579).

1210010022121 is an equidigital number, since it uses as much as digits as its factorization.

1210010022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206175578.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210010022121 its reverse (1212200100121), we get a palindrome (2422210122242).

The spelling of 1210010022121 in words is "one trillion, two hundred ten billion, ten million, twenty-two thousand, one hundred twenty-one".