20101301220 has 384 divisors, whose sum is σ = 77188349952. Its totient is φ = 3773030400.

The previous prime is 20101301197. The next prime is 20101301261. The reversal of 20101301220 is 2210310102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20101301196 and 20101301205.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2819260 + ... + 2826380.

It is an arithmetic number, because the mean of its divisors is an integer number (201011328).

Almost surely, 2^20101301220 is an apocalyptic number.

20101301220 is a gapful number since it is divisible by the number (20) 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 20101301220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38594174976).

20101301220 is an abundant number, since it is smaller than the sum of its proper divisors (57087048732).

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

20101301220 is a wasteful number, since it uses less digits than its factorization.

20101301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7211 (or 7209 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20101301220 its reverse (2210310102), we get a palindrome (22311611322).

The spelling of 20101301220 in words is "twenty billion, one hundred one million, three hundred one thousand, two hundred twenty".