101210210121 has 16 divisors (see below), whose sum is σ = 135374440448. Its totient is φ = 67259808000.

The previous prime is 101210210119. The next prime is 101210210147. The reversal of 101210210121 is 121012012101.

It is not a de Polignac number, because 101210210121 - 2¹ = 101210210119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210210097 and 101210210106.

It is not an unprimeable number, because it can be changed into a prime (101210210161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10004856 + ... + 10014966.

It is an arithmetic number, because the mean of its divisors is an integer number (8460902528).

Almost surely, 2^101210210121 is an apocalyptic number.

It is an amenable number.

101210210121 is a deficient number, since it is larger than the sum of its proper divisors (34164230327).

101210210121 is a wasteful number, since it uses less digits than its factorization.

101210210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20352.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101210210121 its reverse (121012012101), we get a palindrome (222222222222).

The spelling of 101210210121 in words is "one hundred one billion, two hundred ten million, two hundred ten thousand, one hundred twenty-one".