610211021012121 has 4 divisors (see below), whose sum is σ = 813614694682832. Its totient is φ = 406807347341412.

The previous prime is 610211021012093. The next prime is 610211021012123. The reversal of 610211021012121 is 121210120112016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 610211021012121 - 2²¹ = 610211018914969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610211021012123) 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, 101701836835351 + ... + 101701836835356.

It is an arithmetic number, because the mean of its divisors is an integer number (203403673670708).

Almost surely, 2^{610211021012121} is an apocalyptic number.

It is an amenable number.

610211021012121 is a deficient number, since it is larger than the sum of its proper divisors (203403673670711).

610211021012121 is a wasteful number, since it uses less digits than its factorization.

610211021012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203403673670710.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 610211021012121 its reverse (121210120112016), we get a palindrome (731421141124137).

The spelling of 610211021012121 in words is "six hundred ten trillion, two hundred eleven billion, twenty-one million, twelve thousand, one hundred twenty-one".