11703821220 has 720 divisors, whose sum is σ = 47140144128. Its totient is φ = 2377589760.

The previous prime is 11703821219. The next prime is 11703821237. The reversal of 11703821220 is 2212830711.

It is a super-2 number, since 2×11703821220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 59410162 + ... + 59410358.

Almost surely, 2^11703821220 is an apocalyptic number.

11703821220 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 11703821220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23570072064).

11703821220 is an abundant number, since it is smaller than the sum of its proper divisors (35436322908).

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

11703821220 is a wasteful number, since it uses less digits than its factorization.

11703821220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The spelling of 11703821220 in words is "eleven billion, seven hundred three million, eight hundred twenty-one thousand, two hundred twenty".