191022030000 has 400 divisors, whose sum is σ = 725481646560. Its totient is φ = 47941632000.

The previous prime is 191022029959. The next prime is 191022030047. The reversal of 191022030000 is 30220191.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4569192 + ... + 4610808.

Almost surely, 2^191022030000 is an apocalyptic number.

191022030000 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 191022030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362740823280).

191022030000 is an abundant number, since it is smaller than the sum of its proper divisors (534459616560).

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

191022030000 is a wasteful number, since it uses less digits than its factorization.

191022030000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41671 (or 41644 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 191022030000 its reverse (30220191), we get a palindrome (191052250191).

The spelling of 191022030000 in words is "one hundred ninety-one billion, twenty-two million, thirty thousand".