101210121208 has 128 divisors (see below), whose sum is σ = 224539960320. Its totient is φ = 41878425600.

The previous prime is 101210121161. The next prime is 101210121209. The reversal of 101210121208 is 802121012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210121209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39030760 + ... + 39033352.

It is an arithmetic number, because the mean of its divisors is an integer number (1754218440).

Almost surely, 2^101210121208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101210121208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112269980160).

101210121208 is an abundant number, since it is smaller than the sum of its proper divisors (123329839112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101210121208 is a wasteful number, since it uses less digits than its factorization.

101210121208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877 (or 2873 counting only the distinct ones).

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

Adding to 101210121208 its reverse (802121012101), we get a palindrome (903331133309).

The spelling of 101210121208 in words is "one hundred one billion, two hundred ten million, one hundred twenty-one thousand, two hundred eight".