19220951471220 has 576 divisors, whose sum is σ = 62554210467840. Its totient is φ = 4768711833600.

The previous prime is 19220951471203. The next prime is 19220951471243. The reversal of 19220951471220 is 2217415902291.

19220951471220 is a `hidden beast` number, since 1 + 9 + 2 + 2 + 0 + 9 + 514 + 7 + 122 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17115717579 + ... + 17115718701.

It is an arithmetic number, because the mean of its divisors is an integer number (108601059840).

Almost surely, 2^{19220951471220} is an apocalyptic number.

19220951471220 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 19220951471220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31277105233920).

19220951471220 is an abundant number, since it is smaller than the sum of its proper divisors (43333258996620).

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

19220951471220 is a wasteful number, since it uses less digits than its factorization.

19220951471220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236 (or 2231 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 19220951471220 in words is "nineteen trillion, two hundred twenty billion, nine hundred fifty-one million, four hundred seventy-one thousand, two hundred twenty".