210102122121 has 8 divisors (see below), whose sum is σ = 287707410624. Its totient is φ = 136282457520.

The previous prime is 210102122081. The next prime is 210102122129. The reversal of 210102122121 is 121221201012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210102122121 - 2¹³ = 210102113929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210102122121.

It is not an unprimeable number, because it can be changed into a prime (210102122129) 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, 946405845 + ... + 946406066.

It is an arithmetic number, because the mean of its divisors is an integer number (35963426328).

Almost surely, 2^210102122121 is an apocalyptic number.

It is an amenable number.

210102122121 is a deficient number, since it is larger than the sum of its proper divisors (77605288503).

210102122121 is a wasteful number, since it uses less digits than its factorization.

210102122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892811951.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210102122121 its reverse (121221201012), we get a palindrome (331323323133).

The spelling of 210102122121 in words is "two hundred ten billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty-one".