101210122220100 has 144 divisors (see below), whose sum is σ = 308433024648000. Its totient is φ = 25553439774720.

The previous prime is 101210122220089. The next prime is 101210122220107. The reversal of 101210122220100 is 1022221012101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 101210122220100.

It is not an unprimeable number, because it can be changed into a prime (101210122220107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4086976 + ... + 14802824.

It is an arithmetic number, because the mean of its divisors is an integer number (2141896004500).

Almost surely, 2^{101210122220100} is an apocalyptic number.

101210122220100 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 101210122220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154216512324000).

101210122220100 is an abundant number, since it is smaller than the sum of its proper divisors (207222902427900).

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

101210122220100 is a wasteful number, since it uses less digits than its factorization.

101210122220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10717542 (or 10717535 counting only the distinct ones).

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

Adding to 101210122220100 its reverse (1022221012101), we get a palindrome (102232343232201).

The spelling of 101210122220100 in words is "one hundred one trillion, two hundred ten billion, one hundred twenty-two million, two hundred twenty thousand, one hundred".