1101302121220 has 96 divisors (see below), whose sum is σ = 2677895700480. Its totient is φ = 372626766720.

The previous prime is 1101302121211. The next prime is 1101302121233. The reversal of 1101302121220 is 221212031011.

It is a junction number, because it is equal to n+sod(n) for n = 1101302121194 and 1101302121203.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23545497 + ... + 23592223.

It is an arithmetic number, because the mean of its divisors is an integer number (27894746880).

Almost surely, 2^{1101302121220} is an apocalyptic number.

1101302121220 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 1101302121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338947850240).

1101302121220 is an abundant number, since it is smaller than the sum of its proper divisors (1576593579260).

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

1101302121220 is a wasteful number, since it uses less digits than its factorization.

1101302121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48953 (or 48951 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1101302121220 its reverse (221212031011), we get a palindrome (1322514152231).

The spelling of 1101302121220 in words is "one trillion, one hundred one billion, three hundred two million, one hundred twenty-one thousand, two hundred twenty".