10212211122121 has 8 divisors (see below), whose sum is σ = 10262990282688. Its totient is φ = 10161546978000.

The previous prime is 10212211122097. The next prime is 10212211122133. The reversal of 10212211122121 is 12122111221201.

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 10212211122121 - 2¹⁷ = 10212210991049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212211162121) 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, 28576090 + ... + 28931251.

It is an arithmetic number, because the mean of its divisors is an integer number (1282873785336).

Almost surely, 2^{10212211122121} is an apocalyptic number.

It is an amenable number.

10212211122121 is a deficient number, since it is larger than the sum of its proper divisors (50779160567).

10212211122121 is an equidigital number, since it uses as much as digits as its factorization.

10212211122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57508223.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10212211122121 its reverse (12122111221201), we get a palindrome (22334322343322).

The spelling of 10212211122121 in words is "ten trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-one".