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992021303212 = 221391784210977
BaseRepresentation
bin11100110111110010001…
…00111100111110101100
310111211120200002122002121
432123321010330332230
5112223124423200322
62035421151202324
7131446132643242
oct16337104747654
93454520078077
10992021303212
11352794188a05
12140315b163a4
13727162a4094
143602a926792
151ac11077ec7
hexe6f913cfac

992021303212 has 12 divisors (see below), whose sum is σ = 1748526758440. Its totient is φ = 492442229376.

The previous prime is 992021303197. The next prime is 992021303213. The reversal of 992021303212 is 212303120299.

It is not an unprimeable number, because it can be changed into a prime (992021303213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892104933 + ... + 892106044.

Almost surely, 2992021303212 is an apocalyptic number.

It is an amenable number.

992021303212 is a deficient number, since it is larger than the sum of its proper divisors (756505455228).

992021303212 is a wasteful number, since it uses less digits than its factorization.

992021303212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784211120 (or 1784211118 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 992021303212 in words is "nine hundred ninety-two billion, twenty-one million, three hundred three thousand, two hundred twelve".

Divisors: 1 2 4 139 278 556 1784210977 3568421954 7136843908 248005325803 496010651606 992021303212