990221727411 has 32 divisors (see below), whose sum is σ = 1676707776000. Its totient is φ = 565793100000.

The previous prime is 990221727401. The next prime is 990221727433. The reversal of 990221727411 is 114727122099.

It is a happy number.

990221727411 is a `hidden beast` number, since 9 + 9 + 0 + 221 + 7 + 2 + 7 + 411 = 666.

It is not a de Polignac number, because 990221727411 - 2⁵ = 990221727379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990221727401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2080536 + ... + 2511786.

It is an arithmetic number, because the mean of its divisors is an integer number (52397118000).

Almost surely, 2^990221727411 is an apocalyptic number.

990221727411 is a deficient number, since it is larger than the sum of its proper divisors (686486048589).

990221727411 is a wasteful number, since it uses less digits than its factorization.

990221727411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443416 (or 443410 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 990221727411 in words is "nine hundred ninety billion, two hundred twenty-one million, seven hundred twenty-seven thousand, four hundred eleven".