101210220100 has 216 divisors, whose sum is σ = 247139744544. Its totient is φ = 35939904000.

The previous prime is 101210220071. The next prime is 101210220101. The reversal of 101210220100 is 1022012101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (101210220101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 106201224 + ... + 106202176.

It is an arithmetic number, because the mean of its divisors is an integer number (1144165484).

Almost surely, 2^101210220100 is an apocalyptic number.

101210220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101210220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123569872272).

101210220100 is an abundant number, since it is smaller than the sum of its proper divisors (145929524444).

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

101210220100 is a wasteful number, since it uses less digits than its factorization.

101210220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187 (or 1169 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 101210220100 its reverse (1022012101), we get a palindrome (102232232201).

The spelling of 101210220100 in words is "one hundred one billion, two hundred ten million, two hundred twenty thousand, one hundred".