15101361220 has 48 divisors (see below), whose sum is σ = 34684977600. Its totient is φ = 5477256320.

The previous prime is 15101361199. The next prime is 15101361241. The reversal of 15101361220 is 2216310151.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15101361199) and next prime (15101361241).

It is a super-2 number, since 2×15101361220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 15101361191 and 15101361200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2650 + ... + 173809.

It is an arithmetic number, because the mean of its divisors is an integer number (722603700).

Almost surely, 2^15101361220 is an apocalyptic number.

15101361220 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 15101361220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17342488800).

15101361220 is an abundant number, since it is smaller than the sum of its proper divisors (19583616380).

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

15101361220 is a wasteful number, since it uses less digits than its factorization.

15101361220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176868 (or 176866 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 15101361220 its reverse (2216310151), we get a palindrome (17317671371).

The spelling of 15101361220 in words is "fifteen billion, one hundred one million, three hundred sixty-one thousand, two hundred twenty".