101222455440 has 160 divisors (see below), whose sum is σ = 317690380800. Its totient is φ = 26657832960.

The previous prime is 101222455423. The next prime is 101222455441. The reversal of 101222455440 is 44554222101.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 101222455398 and 101222455407.

It is not an unprimeable number, because it can be changed into a prime (101222455441) 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, 22190760 + ... + 22195320.

It is an arithmetic number, because the mean of its divisors is an integer number (1985564880).

Almost surely, 2^101222455440 is an apocalyptic number.

101222455440 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 101222455440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158845190400).

101222455440 is an abundant number, since it is smaller than the sum of its proper divisors (216467925360).

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

101222455440 is a wasteful number, since it uses less digits than its factorization.

101222455440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705 (or 5699 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 101222455440 its reverse (44554222101), we get a palindrome (145776677541).

The spelling of 101222455440 in words is "one hundred one billion, two hundred twenty-two million, four hundred fifty-five thousand, four hundred forty".